Post on 23-Apr-2020
Robert Kostick
Eshan Dave amp Jay Dailey University of Minnesota Duluth
Comparative Performance Study of Bonded Wear Course Systems
Applied to Bridge Decks
2
3
Benefits
4
1 Lightweight
5
2 High Friction
6
3 Deck Sealant
7
4 Fast Cure Time
8
Purpose of Research
Outline Construction Aggregate Quality Testing Bridge Site Visits Accident Data Analysis Conclusion
9
Construction
Surface Preparation
Joint Preparation
Epoxy Layer
Adding Aggregate
Aggregate Quality Testing
18
Aggregate Gradation
19
0
10
20
30
40
50
60
70
80
90
100
0375 4 8 16 50
Perc
ent P
assi
ng (
)
Sieve Size
Basalt Flint Taconite A Taconite B
SafeLane MnDOT Upper Limit MnDOT Lower Limit
Mass Loss Due to Freeze Thaw
20
00
05
10
15
20
25
30
Basalt Flint Taconite A Taconite B SafeLane
Perc
ent L
ost (
)
Aggregate Type
Bridge Site Visits
Interstate 94 in Moorhead Bridge 9066 amp 9067 PolyCarb System (Flint)
Highway 53 in Virginia Br 69006 PolyCarb System (Taconite)
Interstate 35 in Atkinson Br 9832 PolyCarb System (Basalt)
Interstate 1-94 in Barnesville Br 14809 amp 14810 SafeLane
TH 101 amp CSAH 36 in Otsego Br 27758 86013 amp 86019 NovaChip
Penn Ave in Minneapolis Br 27758 Transpo T-48
TH 243 in Osceola Br 6347 Transpo T-48
Field Testing
Permeability Test (Water sealant) Torque Bond Test (Bond to bridge deck) Sand Patch Test (Friction) Surface Friction (Friction)
29
Permeability
Bridge Permeability (cmsec)
Wheel Path Non-Wheel Path
69006 0 10x10-6 9832 90x10-7 20X10-7 4190 NA NA 9036 22X10-7 19X10-7 6066 0 21X10-7 6067 18X10-7 NA
14810 38x10-6 NA 86013 98x10-5 55x10-6
Permeability Results
Torque Bond Strength
33
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
2
3
Benefits
4
1 Lightweight
5
2 High Friction
6
3 Deck Sealant
7
4 Fast Cure Time
8
Purpose of Research
Outline Construction Aggregate Quality Testing Bridge Site Visits Accident Data Analysis Conclusion
9
Construction
Surface Preparation
Joint Preparation
Epoxy Layer
Adding Aggregate
Aggregate Quality Testing
18
Aggregate Gradation
19
0
10
20
30
40
50
60
70
80
90
100
0375 4 8 16 50
Perc
ent P
assi
ng (
)
Sieve Size
Basalt Flint Taconite A Taconite B
SafeLane MnDOT Upper Limit MnDOT Lower Limit
Mass Loss Due to Freeze Thaw
20
00
05
10
15
20
25
30
Basalt Flint Taconite A Taconite B SafeLane
Perc
ent L
ost (
)
Aggregate Type
Bridge Site Visits
Interstate 94 in Moorhead Bridge 9066 amp 9067 PolyCarb System (Flint)
Highway 53 in Virginia Br 69006 PolyCarb System (Taconite)
Interstate 35 in Atkinson Br 9832 PolyCarb System (Basalt)
Interstate 1-94 in Barnesville Br 14809 amp 14810 SafeLane
TH 101 amp CSAH 36 in Otsego Br 27758 86013 amp 86019 NovaChip
Penn Ave in Minneapolis Br 27758 Transpo T-48
TH 243 in Osceola Br 6347 Transpo T-48
Field Testing
Permeability Test (Water sealant) Torque Bond Test (Bond to bridge deck) Sand Patch Test (Friction) Surface Friction (Friction)
29
Permeability
Bridge Permeability (cmsec)
Wheel Path Non-Wheel Path
69006 0 10x10-6 9832 90x10-7 20X10-7 4190 NA NA 9036 22X10-7 19X10-7 6066 0 21X10-7 6067 18X10-7 NA
14810 38x10-6 NA 86013 98x10-5 55x10-6
Permeability Results
Torque Bond Strength
33
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
3
Benefits
4
1 Lightweight
5
2 High Friction
6
3 Deck Sealant
7
4 Fast Cure Time
8
Purpose of Research
Outline Construction Aggregate Quality Testing Bridge Site Visits Accident Data Analysis Conclusion
9
Construction
Surface Preparation
Joint Preparation
Epoxy Layer
Adding Aggregate
Aggregate Quality Testing
18
Aggregate Gradation
19
0
10
20
30
40
50
60
70
80
90
100
0375 4 8 16 50
Perc
ent P
assi
ng (
)
Sieve Size
Basalt Flint Taconite A Taconite B
SafeLane MnDOT Upper Limit MnDOT Lower Limit
Mass Loss Due to Freeze Thaw
20
00
05
10
15
20
25
30
Basalt Flint Taconite A Taconite B SafeLane
Perc
ent L
ost (
)
Aggregate Type
Bridge Site Visits
Interstate 94 in Moorhead Bridge 9066 amp 9067 PolyCarb System (Flint)
Highway 53 in Virginia Br 69006 PolyCarb System (Taconite)
Interstate 35 in Atkinson Br 9832 PolyCarb System (Basalt)
Interstate 1-94 in Barnesville Br 14809 amp 14810 SafeLane
TH 101 amp CSAH 36 in Otsego Br 27758 86013 amp 86019 NovaChip
Penn Ave in Minneapolis Br 27758 Transpo T-48
TH 243 in Osceola Br 6347 Transpo T-48
Field Testing
Permeability Test (Water sealant) Torque Bond Test (Bond to bridge deck) Sand Patch Test (Friction) Surface Friction (Friction)
29
Permeability
Bridge Permeability (cmsec)
Wheel Path Non-Wheel Path
69006 0 10x10-6 9832 90x10-7 20X10-7 4190 NA NA 9036 22X10-7 19X10-7 6066 0 21X10-7 6067 18X10-7 NA
14810 38x10-6 NA 86013 98x10-5 55x10-6
Permeability Results
Torque Bond Strength
33
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
4
1 Lightweight
5
2 High Friction
6
3 Deck Sealant
7
4 Fast Cure Time
8
Purpose of Research
Outline Construction Aggregate Quality Testing Bridge Site Visits Accident Data Analysis Conclusion
9
Construction
Surface Preparation
Joint Preparation
Epoxy Layer
Adding Aggregate
Aggregate Quality Testing
18
Aggregate Gradation
19
0
10
20
30
40
50
60
70
80
90
100
0375 4 8 16 50
Perc
ent P
assi
ng (
)
Sieve Size
Basalt Flint Taconite A Taconite B
SafeLane MnDOT Upper Limit MnDOT Lower Limit
Mass Loss Due to Freeze Thaw
20
00
05
10
15
20
25
30
Basalt Flint Taconite A Taconite B SafeLane
Perc
ent L
ost (
)
Aggregate Type
Bridge Site Visits
Interstate 94 in Moorhead Bridge 9066 amp 9067 PolyCarb System (Flint)
Highway 53 in Virginia Br 69006 PolyCarb System (Taconite)
Interstate 35 in Atkinson Br 9832 PolyCarb System (Basalt)
Interstate 1-94 in Barnesville Br 14809 amp 14810 SafeLane
TH 101 amp CSAH 36 in Otsego Br 27758 86013 amp 86019 NovaChip
Penn Ave in Minneapolis Br 27758 Transpo T-48
TH 243 in Osceola Br 6347 Transpo T-48
Field Testing
Permeability Test (Water sealant) Torque Bond Test (Bond to bridge deck) Sand Patch Test (Friction) Surface Friction (Friction)
29
Permeability
Bridge Permeability (cmsec)
Wheel Path Non-Wheel Path
69006 0 10x10-6 9832 90x10-7 20X10-7 4190 NA NA 9036 22X10-7 19X10-7 6066 0 21X10-7 6067 18X10-7 NA
14810 38x10-6 NA 86013 98x10-5 55x10-6
Permeability Results
Torque Bond Strength
33
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
5
2 High Friction
6
3 Deck Sealant
7
4 Fast Cure Time
8
Purpose of Research
Outline Construction Aggregate Quality Testing Bridge Site Visits Accident Data Analysis Conclusion
9
Construction
Surface Preparation
Joint Preparation
Epoxy Layer
Adding Aggregate
Aggregate Quality Testing
18
Aggregate Gradation
19
0
10
20
30
40
50
60
70
80
90
100
0375 4 8 16 50
Perc
ent P
assi
ng (
)
Sieve Size
Basalt Flint Taconite A Taconite B
SafeLane MnDOT Upper Limit MnDOT Lower Limit
Mass Loss Due to Freeze Thaw
20
00
05
10
15
20
25
30
Basalt Flint Taconite A Taconite B SafeLane
Perc
ent L
ost (
)
Aggregate Type
Bridge Site Visits
Interstate 94 in Moorhead Bridge 9066 amp 9067 PolyCarb System (Flint)
Highway 53 in Virginia Br 69006 PolyCarb System (Taconite)
Interstate 35 in Atkinson Br 9832 PolyCarb System (Basalt)
Interstate 1-94 in Barnesville Br 14809 amp 14810 SafeLane
TH 101 amp CSAH 36 in Otsego Br 27758 86013 amp 86019 NovaChip
Penn Ave in Minneapolis Br 27758 Transpo T-48
TH 243 in Osceola Br 6347 Transpo T-48
Field Testing
Permeability Test (Water sealant) Torque Bond Test (Bond to bridge deck) Sand Patch Test (Friction) Surface Friction (Friction)
29
Permeability
Bridge Permeability (cmsec)
Wheel Path Non-Wheel Path
69006 0 10x10-6 9832 90x10-7 20X10-7 4190 NA NA 9036 22X10-7 19X10-7 6066 0 21X10-7 6067 18X10-7 NA
14810 38x10-6 NA 86013 98x10-5 55x10-6
Permeability Results
Torque Bond Strength
33
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
6
3 Deck Sealant
7
4 Fast Cure Time
8
Purpose of Research
Outline Construction Aggregate Quality Testing Bridge Site Visits Accident Data Analysis Conclusion
9
Construction
Surface Preparation
Joint Preparation
Epoxy Layer
Adding Aggregate
Aggregate Quality Testing
18
Aggregate Gradation
19
0
10
20
30
40
50
60
70
80
90
100
0375 4 8 16 50
Perc
ent P
assi
ng (
)
Sieve Size
Basalt Flint Taconite A Taconite B
SafeLane MnDOT Upper Limit MnDOT Lower Limit
Mass Loss Due to Freeze Thaw
20
00
05
10
15
20
25
30
Basalt Flint Taconite A Taconite B SafeLane
Perc
ent L
ost (
)
Aggregate Type
Bridge Site Visits
Interstate 94 in Moorhead Bridge 9066 amp 9067 PolyCarb System (Flint)
Highway 53 in Virginia Br 69006 PolyCarb System (Taconite)
Interstate 35 in Atkinson Br 9832 PolyCarb System (Basalt)
Interstate 1-94 in Barnesville Br 14809 amp 14810 SafeLane
TH 101 amp CSAH 36 in Otsego Br 27758 86013 amp 86019 NovaChip
Penn Ave in Minneapolis Br 27758 Transpo T-48
TH 243 in Osceola Br 6347 Transpo T-48
Field Testing
Permeability Test (Water sealant) Torque Bond Test (Bond to bridge deck) Sand Patch Test (Friction) Surface Friction (Friction)
29
Permeability
Bridge Permeability (cmsec)
Wheel Path Non-Wheel Path
69006 0 10x10-6 9832 90x10-7 20X10-7 4190 NA NA 9036 22X10-7 19X10-7 6066 0 21X10-7 6067 18X10-7 NA
14810 38x10-6 NA 86013 98x10-5 55x10-6
Permeability Results
Torque Bond Strength
33
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
7
4 Fast Cure Time
8
Purpose of Research
Outline Construction Aggregate Quality Testing Bridge Site Visits Accident Data Analysis Conclusion
9
Construction
Surface Preparation
Joint Preparation
Epoxy Layer
Adding Aggregate
Aggregate Quality Testing
18
Aggregate Gradation
19
0
10
20
30
40
50
60
70
80
90
100
0375 4 8 16 50
Perc
ent P
assi
ng (
)
Sieve Size
Basalt Flint Taconite A Taconite B
SafeLane MnDOT Upper Limit MnDOT Lower Limit
Mass Loss Due to Freeze Thaw
20
00
05
10
15
20
25
30
Basalt Flint Taconite A Taconite B SafeLane
Perc
ent L
ost (
)
Aggregate Type
Bridge Site Visits
Interstate 94 in Moorhead Bridge 9066 amp 9067 PolyCarb System (Flint)
Highway 53 in Virginia Br 69006 PolyCarb System (Taconite)
Interstate 35 in Atkinson Br 9832 PolyCarb System (Basalt)
Interstate 1-94 in Barnesville Br 14809 amp 14810 SafeLane
TH 101 amp CSAH 36 in Otsego Br 27758 86013 amp 86019 NovaChip
Penn Ave in Minneapolis Br 27758 Transpo T-48
TH 243 in Osceola Br 6347 Transpo T-48
Field Testing
Permeability Test (Water sealant) Torque Bond Test (Bond to bridge deck) Sand Patch Test (Friction) Surface Friction (Friction)
29
Permeability
Bridge Permeability (cmsec)
Wheel Path Non-Wheel Path
69006 0 10x10-6 9832 90x10-7 20X10-7 4190 NA NA 9036 22X10-7 19X10-7 6066 0 21X10-7 6067 18X10-7 NA
14810 38x10-6 NA 86013 98x10-5 55x10-6
Permeability Results
Torque Bond Strength
33
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
8
Purpose of Research
Outline Construction Aggregate Quality Testing Bridge Site Visits Accident Data Analysis Conclusion
9
Construction
Surface Preparation
Joint Preparation
Epoxy Layer
Adding Aggregate
Aggregate Quality Testing
18
Aggregate Gradation
19
0
10
20
30
40
50
60
70
80
90
100
0375 4 8 16 50
Perc
ent P
assi
ng (
)
Sieve Size
Basalt Flint Taconite A Taconite B
SafeLane MnDOT Upper Limit MnDOT Lower Limit
Mass Loss Due to Freeze Thaw
20
00
05
10
15
20
25
30
Basalt Flint Taconite A Taconite B SafeLane
Perc
ent L
ost (
)
Aggregate Type
Bridge Site Visits
Interstate 94 in Moorhead Bridge 9066 amp 9067 PolyCarb System (Flint)
Highway 53 in Virginia Br 69006 PolyCarb System (Taconite)
Interstate 35 in Atkinson Br 9832 PolyCarb System (Basalt)
Interstate 1-94 in Barnesville Br 14809 amp 14810 SafeLane
TH 101 amp CSAH 36 in Otsego Br 27758 86013 amp 86019 NovaChip
Penn Ave in Minneapolis Br 27758 Transpo T-48
TH 243 in Osceola Br 6347 Transpo T-48
Field Testing
Permeability Test (Water sealant) Torque Bond Test (Bond to bridge deck) Sand Patch Test (Friction) Surface Friction (Friction)
29
Permeability
Bridge Permeability (cmsec)
Wheel Path Non-Wheel Path
69006 0 10x10-6 9832 90x10-7 20X10-7 4190 NA NA 9036 22X10-7 19X10-7 6066 0 21X10-7 6067 18X10-7 NA
14810 38x10-6 NA 86013 98x10-5 55x10-6
Permeability Results
Torque Bond Strength
33
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Outline Construction Aggregate Quality Testing Bridge Site Visits Accident Data Analysis Conclusion
9
Construction
Surface Preparation
Joint Preparation
Epoxy Layer
Adding Aggregate
Aggregate Quality Testing
18
Aggregate Gradation
19
0
10
20
30
40
50
60
70
80
90
100
0375 4 8 16 50
Perc
ent P
assi
ng (
)
Sieve Size
Basalt Flint Taconite A Taconite B
SafeLane MnDOT Upper Limit MnDOT Lower Limit
Mass Loss Due to Freeze Thaw
20
00
05
10
15
20
25
30
Basalt Flint Taconite A Taconite B SafeLane
Perc
ent L
ost (
)
Aggregate Type
Bridge Site Visits
Interstate 94 in Moorhead Bridge 9066 amp 9067 PolyCarb System (Flint)
Highway 53 in Virginia Br 69006 PolyCarb System (Taconite)
Interstate 35 in Atkinson Br 9832 PolyCarb System (Basalt)
Interstate 1-94 in Barnesville Br 14809 amp 14810 SafeLane
TH 101 amp CSAH 36 in Otsego Br 27758 86013 amp 86019 NovaChip
Penn Ave in Minneapolis Br 27758 Transpo T-48
TH 243 in Osceola Br 6347 Transpo T-48
Field Testing
Permeability Test (Water sealant) Torque Bond Test (Bond to bridge deck) Sand Patch Test (Friction) Surface Friction (Friction)
29
Permeability
Bridge Permeability (cmsec)
Wheel Path Non-Wheel Path
69006 0 10x10-6 9832 90x10-7 20X10-7 4190 NA NA 9036 22X10-7 19X10-7 6066 0 21X10-7 6067 18X10-7 NA
14810 38x10-6 NA 86013 98x10-5 55x10-6
Permeability Results
Torque Bond Strength
33
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Construction
Surface Preparation
Joint Preparation
Epoxy Layer
Adding Aggregate
Aggregate Quality Testing
18
Aggregate Gradation
19
0
10
20
30
40
50
60
70
80
90
100
0375 4 8 16 50
Perc
ent P
assi
ng (
)
Sieve Size
Basalt Flint Taconite A Taconite B
SafeLane MnDOT Upper Limit MnDOT Lower Limit
Mass Loss Due to Freeze Thaw
20
00
05
10
15
20
25
30
Basalt Flint Taconite A Taconite B SafeLane
Perc
ent L
ost (
)
Aggregate Type
Bridge Site Visits
Interstate 94 in Moorhead Bridge 9066 amp 9067 PolyCarb System (Flint)
Highway 53 in Virginia Br 69006 PolyCarb System (Taconite)
Interstate 35 in Atkinson Br 9832 PolyCarb System (Basalt)
Interstate 1-94 in Barnesville Br 14809 amp 14810 SafeLane
TH 101 amp CSAH 36 in Otsego Br 27758 86013 amp 86019 NovaChip
Penn Ave in Minneapolis Br 27758 Transpo T-48
TH 243 in Osceola Br 6347 Transpo T-48
Field Testing
Permeability Test (Water sealant) Torque Bond Test (Bond to bridge deck) Sand Patch Test (Friction) Surface Friction (Friction)
29
Permeability
Bridge Permeability (cmsec)
Wheel Path Non-Wheel Path
69006 0 10x10-6 9832 90x10-7 20X10-7 4190 NA NA 9036 22X10-7 19X10-7 6066 0 21X10-7 6067 18X10-7 NA
14810 38x10-6 NA 86013 98x10-5 55x10-6
Permeability Results
Torque Bond Strength
33
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Surface Preparation
Joint Preparation
Epoxy Layer
Adding Aggregate
Aggregate Quality Testing
18
Aggregate Gradation
19
0
10
20
30
40
50
60
70
80
90
100
0375 4 8 16 50
Perc
ent P
assi
ng (
)
Sieve Size
Basalt Flint Taconite A Taconite B
SafeLane MnDOT Upper Limit MnDOT Lower Limit
Mass Loss Due to Freeze Thaw
20
00
05
10
15
20
25
30
Basalt Flint Taconite A Taconite B SafeLane
Perc
ent L
ost (
)
Aggregate Type
Bridge Site Visits
Interstate 94 in Moorhead Bridge 9066 amp 9067 PolyCarb System (Flint)
Highway 53 in Virginia Br 69006 PolyCarb System (Taconite)
Interstate 35 in Atkinson Br 9832 PolyCarb System (Basalt)
Interstate 1-94 in Barnesville Br 14809 amp 14810 SafeLane
TH 101 amp CSAH 36 in Otsego Br 27758 86013 amp 86019 NovaChip
Penn Ave in Minneapolis Br 27758 Transpo T-48
TH 243 in Osceola Br 6347 Transpo T-48
Field Testing
Permeability Test (Water sealant) Torque Bond Test (Bond to bridge deck) Sand Patch Test (Friction) Surface Friction (Friction)
29
Permeability
Bridge Permeability (cmsec)
Wheel Path Non-Wheel Path
69006 0 10x10-6 9832 90x10-7 20X10-7 4190 NA NA 9036 22X10-7 19X10-7 6066 0 21X10-7 6067 18X10-7 NA
14810 38x10-6 NA 86013 98x10-5 55x10-6
Permeability Results
Torque Bond Strength
33
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Joint Preparation
Epoxy Layer
Adding Aggregate
Aggregate Quality Testing
18
Aggregate Gradation
19
0
10
20
30
40
50
60
70
80
90
100
0375 4 8 16 50
Perc
ent P
assi
ng (
)
Sieve Size
Basalt Flint Taconite A Taconite B
SafeLane MnDOT Upper Limit MnDOT Lower Limit
Mass Loss Due to Freeze Thaw
20
00
05
10
15
20
25
30
Basalt Flint Taconite A Taconite B SafeLane
Perc
ent L
ost (
)
Aggregate Type
Bridge Site Visits
Interstate 94 in Moorhead Bridge 9066 amp 9067 PolyCarb System (Flint)
Highway 53 in Virginia Br 69006 PolyCarb System (Taconite)
Interstate 35 in Atkinson Br 9832 PolyCarb System (Basalt)
Interstate 1-94 in Barnesville Br 14809 amp 14810 SafeLane
TH 101 amp CSAH 36 in Otsego Br 27758 86013 amp 86019 NovaChip
Penn Ave in Minneapolis Br 27758 Transpo T-48
TH 243 in Osceola Br 6347 Transpo T-48
Field Testing
Permeability Test (Water sealant) Torque Bond Test (Bond to bridge deck) Sand Patch Test (Friction) Surface Friction (Friction)
29
Permeability
Bridge Permeability (cmsec)
Wheel Path Non-Wheel Path
69006 0 10x10-6 9832 90x10-7 20X10-7 4190 NA NA 9036 22X10-7 19X10-7 6066 0 21X10-7 6067 18X10-7 NA
14810 38x10-6 NA 86013 98x10-5 55x10-6
Permeability Results
Torque Bond Strength
33
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Epoxy Layer
Adding Aggregate
Aggregate Quality Testing
18
Aggregate Gradation
19
0
10
20
30
40
50
60
70
80
90
100
0375 4 8 16 50
Perc
ent P
assi
ng (
)
Sieve Size
Basalt Flint Taconite A Taconite B
SafeLane MnDOT Upper Limit MnDOT Lower Limit
Mass Loss Due to Freeze Thaw
20
00
05
10
15
20
25
30
Basalt Flint Taconite A Taconite B SafeLane
Perc
ent L
ost (
)
Aggregate Type
Bridge Site Visits
Interstate 94 in Moorhead Bridge 9066 amp 9067 PolyCarb System (Flint)
Highway 53 in Virginia Br 69006 PolyCarb System (Taconite)
Interstate 35 in Atkinson Br 9832 PolyCarb System (Basalt)
Interstate 1-94 in Barnesville Br 14809 amp 14810 SafeLane
TH 101 amp CSAH 36 in Otsego Br 27758 86013 amp 86019 NovaChip
Penn Ave in Minneapolis Br 27758 Transpo T-48
TH 243 in Osceola Br 6347 Transpo T-48
Field Testing
Permeability Test (Water sealant) Torque Bond Test (Bond to bridge deck) Sand Patch Test (Friction) Surface Friction (Friction)
29
Permeability
Bridge Permeability (cmsec)
Wheel Path Non-Wheel Path
69006 0 10x10-6 9832 90x10-7 20X10-7 4190 NA NA 9036 22X10-7 19X10-7 6066 0 21X10-7 6067 18X10-7 NA
14810 38x10-6 NA 86013 98x10-5 55x10-6
Permeability Results
Torque Bond Strength
33
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Adding Aggregate
Aggregate Quality Testing
18
Aggregate Gradation
19
0
10
20
30
40
50
60
70
80
90
100
0375 4 8 16 50
Perc
ent P
assi
ng (
)
Sieve Size
Basalt Flint Taconite A Taconite B
SafeLane MnDOT Upper Limit MnDOT Lower Limit
Mass Loss Due to Freeze Thaw
20
00
05
10
15
20
25
30
Basalt Flint Taconite A Taconite B SafeLane
Perc
ent L
ost (
)
Aggregate Type
Bridge Site Visits
Interstate 94 in Moorhead Bridge 9066 amp 9067 PolyCarb System (Flint)
Highway 53 in Virginia Br 69006 PolyCarb System (Taconite)
Interstate 35 in Atkinson Br 9832 PolyCarb System (Basalt)
Interstate 1-94 in Barnesville Br 14809 amp 14810 SafeLane
TH 101 amp CSAH 36 in Otsego Br 27758 86013 amp 86019 NovaChip
Penn Ave in Minneapolis Br 27758 Transpo T-48
TH 243 in Osceola Br 6347 Transpo T-48
Field Testing
Permeability Test (Water sealant) Torque Bond Test (Bond to bridge deck) Sand Patch Test (Friction) Surface Friction (Friction)
29
Permeability
Bridge Permeability (cmsec)
Wheel Path Non-Wheel Path
69006 0 10x10-6 9832 90x10-7 20X10-7 4190 NA NA 9036 22X10-7 19X10-7 6066 0 21X10-7 6067 18X10-7 NA
14810 38x10-6 NA 86013 98x10-5 55x10-6
Permeability Results
Torque Bond Strength
33
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Aggregate Quality Testing
18
Aggregate Gradation
19
0
10
20
30
40
50
60
70
80
90
100
0375 4 8 16 50
Perc
ent P
assi
ng (
)
Sieve Size
Basalt Flint Taconite A Taconite B
SafeLane MnDOT Upper Limit MnDOT Lower Limit
Mass Loss Due to Freeze Thaw
20
00
05
10
15
20
25
30
Basalt Flint Taconite A Taconite B SafeLane
Perc
ent L
ost (
)
Aggregate Type
Bridge Site Visits
Interstate 94 in Moorhead Bridge 9066 amp 9067 PolyCarb System (Flint)
Highway 53 in Virginia Br 69006 PolyCarb System (Taconite)
Interstate 35 in Atkinson Br 9832 PolyCarb System (Basalt)
Interstate 1-94 in Barnesville Br 14809 amp 14810 SafeLane
TH 101 amp CSAH 36 in Otsego Br 27758 86013 amp 86019 NovaChip
Penn Ave in Minneapolis Br 27758 Transpo T-48
TH 243 in Osceola Br 6347 Transpo T-48
Field Testing
Permeability Test (Water sealant) Torque Bond Test (Bond to bridge deck) Sand Patch Test (Friction) Surface Friction (Friction)
29
Permeability
Bridge Permeability (cmsec)
Wheel Path Non-Wheel Path
69006 0 10x10-6 9832 90x10-7 20X10-7 4190 NA NA 9036 22X10-7 19X10-7 6066 0 21X10-7 6067 18X10-7 NA
14810 38x10-6 NA 86013 98x10-5 55x10-6
Permeability Results
Torque Bond Strength
33
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
18
Aggregate Gradation
19
0
10
20
30
40
50
60
70
80
90
100
0375 4 8 16 50
Perc
ent P
assi
ng (
)
Sieve Size
Basalt Flint Taconite A Taconite B
SafeLane MnDOT Upper Limit MnDOT Lower Limit
Mass Loss Due to Freeze Thaw
20
00
05
10
15
20
25
30
Basalt Flint Taconite A Taconite B SafeLane
Perc
ent L
ost (
)
Aggregate Type
Bridge Site Visits
Interstate 94 in Moorhead Bridge 9066 amp 9067 PolyCarb System (Flint)
Highway 53 in Virginia Br 69006 PolyCarb System (Taconite)
Interstate 35 in Atkinson Br 9832 PolyCarb System (Basalt)
Interstate 1-94 in Barnesville Br 14809 amp 14810 SafeLane
TH 101 amp CSAH 36 in Otsego Br 27758 86013 amp 86019 NovaChip
Penn Ave in Minneapolis Br 27758 Transpo T-48
TH 243 in Osceola Br 6347 Transpo T-48
Field Testing
Permeability Test (Water sealant) Torque Bond Test (Bond to bridge deck) Sand Patch Test (Friction) Surface Friction (Friction)
29
Permeability
Bridge Permeability (cmsec)
Wheel Path Non-Wheel Path
69006 0 10x10-6 9832 90x10-7 20X10-7 4190 NA NA 9036 22X10-7 19X10-7 6066 0 21X10-7 6067 18X10-7 NA
14810 38x10-6 NA 86013 98x10-5 55x10-6
Permeability Results
Torque Bond Strength
33
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Aggregate Gradation
19
0
10
20
30
40
50
60
70
80
90
100
0375 4 8 16 50
Perc
ent P
assi
ng (
)
Sieve Size
Basalt Flint Taconite A Taconite B
SafeLane MnDOT Upper Limit MnDOT Lower Limit
Mass Loss Due to Freeze Thaw
20
00
05
10
15
20
25
30
Basalt Flint Taconite A Taconite B SafeLane
Perc
ent L
ost (
)
Aggregate Type
Bridge Site Visits
Interstate 94 in Moorhead Bridge 9066 amp 9067 PolyCarb System (Flint)
Highway 53 in Virginia Br 69006 PolyCarb System (Taconite)
Interstate 35 in Atkinson Br 9832 PolyCarb System (Basalt)
Interstate 1-94 in Barnesville Br 14809 amp 14810 SafeLane
TH 101 amp CSAH 36 in Otsego Br 27758 86013 amp 86019 NovaChip
Penn Ave in Minneapolis Br 27758 Transpo T-48
TH 243 in Osceola Br 6347 Transpo T-48
Field Testing
Permeability Test (Water sealant) Torque Bond Test (Bond to bridge deck) Sand Patch Test (Friction) Surface Friction (Friction)
29
Permeability
Bridge Permeability (cmsec)
Wheel Path Non-Wheel Path
69006 0 10x10-6 9832 90x10-7 20X10-7 4190 NA NA 9036 22X10-7 19X10-7 6066 0 21X10-7 6067 18X10-7 NA
14810 38x10-6 NA 86013 98x10-5 55x10-6
Permeability Results
Torque Bond Strength
33
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Mass Loss Due to Freeze Thaw
20
00
05
10
15
20
25
30
Basalt Flint Taconite A Taconite B SafeLane
Perc
ent L
ost (
)
Aggregate Type
Bridge Site Visits
Interstate 94 in Moorhead Bridge 9066 amp 9067 PolyCarb System (Flint)
Highway 53 in Virginia Br 69006 PolyCarb System (Taconite)
Interstate 35 in Atkinson Br 9832 PolyCarb System (Basalt)
Interstate 1-94 in Barnesville Br 14809 amp 14810 SafeLane
TH 101 amp CSAH 36 in Otsego Br 27758 86013 amp 86019 NovaChip
Penn Ave in Minneapolis Br 27758 Transpo T-48
TH 243 in Osceola Br 6347 Transpo T-48
Field Testing
Permeability Test (Water sealant) Torque Bond Test (Bond to bridge deck) Sand Patch Test (Friction) Surface Friction (Friction)
29
Permeability
Bridge Permeability (cmsec)
Wheel Path Non-Wheel Path
69006 0 10x10-6 9832 90x10-7 20X10-7 4190 NA NA 9036 22X10-7 19X10-7 6066 0 21X10-7 6067 18X10-7 NA
14810 38x10-6 NA 86013 98x10-5 55x10-6
Permeability Results
Torque Bond Strength
33
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Bridge Site Visits
Interstate 94 in Moorhead Bridge 9066 amp 9067 PolyCarb System (Flint)
Highway 53 in Virginia Br 69006 PolyCarb System (Taconite)
Interstate 35 in Atkinson Br 9832 PolyCarb System (Basalt)
Interstate 1-94 in Barnesville Br 14809 amp 14810 SafeLane
TH 101 amp CSAH 36 in Otsego Br 27758 86013 amp 86019 NovaChip
Penn Ave in Minneapolis Br 27758 Transpo T-48
TH 243 in Osceola Br 6347 Transpo T-48
Field Testing
Permeability Test (Water sealant) Torque Bond Test (Bond to bridge deck) Sand Patch Test (Friction) Surface Friction (Friction)
29
Permeability
Bridge Permeability (cmsec)
Wheel Path Non-Wheel Path
69006 0 10x10-6 9832 90x10-7 20X10-7 4190 NA NA 9036 22X10-7 19X10-7 6066 0 21X10-7 6067 18X10-7 NA
14810 38x10-6 NA 86013 98x10-5 55x10-6
Permeability Results
Torque Bond Strength
33
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Interstate 94 in Moorhead Bridge 9066 amp 9067 PolyCarb System (Flint)
Highway 53 in Virginia Br 69006 PolyCarb System (Taconite)
Interstate 35 in Atkinson Br 9832 PolyCarb System (Basalt)
Interstate 1-94 in Barnesville Br 14809 amp 14810 SafeLane
TH 101 amp CSAH 36 in Otsego Br 27758 86013 amp 86019 NovaChip
Penn Ave in Minneapolis Br 27758 Transpo T-48
TH 243 in Osceola Br 6347 Transpo T-48
Field Testing
Permeability Test (Water sealant) Torque Bond Test (Bond to bridge deck) Sand Patch Test (Friction) Surface Friction (Friction)
29
Permeability
Bridge Permeability (cmsec)
Wheel Path Non-Wheel Path
69006 0 10x10-6 9832 90x10-7 20X10-7 4190 NA NA 9036 22X10-7 19X10-7 6066 0 21X10-7 6067 18X10-7 NA
14810 38x10-6 NA 86013 98x10-5 55x10-6
Permeability Results
Torque Bond Strength
33
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Highway 53 in Virginia Br 69006 PolyCarb System (Taconite)
Interstate 35 in Atkinson Br 9832 PolyCarb System (Basalt)
Interstate 1-94 in Barnesville Br 14809 amp 14810 SafeLane
TH 101 amp CSAH 36 in Otsego Br 27758 86013 amp 86019 NovaChip
Penn Ave in Minneapolis Br 27758 Transpo T-48
TH 243 in Osceola Br 6347 Transpo T-48
Field Testing
Permeability Test (Water sealant) Torque Bond Test (Bond to bridge deck) Sand Patch Test (Friction) Surface Friction (Friction)
29
Permeability
Bridge Permeability (cmsec)
Wheel Path Non-Wheel Path
69006 0 10x10-6 9832 90x10-7 20X10-7 4190 NA NA 9036 22X10-7 19X10-7 6066 0 21X10-7 6067 18X10-7 NA
14810 38x10-6 NA 86013 98x10-5 55x10-6
Permeability Results
Torque Bond Strength
33
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Interstate 35 in Atkinson Br 9832 PolyCarb System (Basalt)
Interstate 1-94 in Barnesville Br 14809 amp 14810 SafeLane
TH 101 amp CSAH 36 in Otsego Br 27758 86013 amp 86019 NovaChip
Penn Ave in Minneapolis Br 27758 Transpo T-48
TH 243 in Osceola Br 6347 Transpo T-48
Field Testing
Permeability Test (Water sealant) Torque Bond Test (Bond to bridge deck) Sand Patch Test (Friction) Surface Friction (Friction)
29
Permeability
Bridge Permeability (cmsec)
Wheel Path Non-Wheel Path
69006 0 10x10-6 9832 90x10-7 20X10-7 4190 NA NA 9036 22X10-7 19X10-7 6066 0 21X10-7 6067 18X10-7 NA
14810 38x10-6 NA 86013 98x10-5 55x10-6
Permeability Results
Torque Bond Strength
33
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Interstate 1-94 in Barnesville Br 14809 amp 14810 SafeLane
TH 101 amp CSAH 36 in Otsego Br 27758 86013 amp 86019 NovaChip
Penn Ave in Minneapolis Br 27758 Transpo T-48
TH 243 in Osceola Br 6347 Transpo T-48
Field Testing
Permeability Test (Water sealant) Torque Bond Test (Bond to bridge deck) Sand Patch Test (Friction) Surface Friction (Friction)
29
Permeability
Bridge Permeability (cmsec)
Wheel Path Non-Wheel Path
69006 0 10x10-6 9832 90x10-7 20X10-7 4190 NA NA 9036 22X10-7 19X10-7 6066 0 21X10-7 6067 18X10-7 NA
14810 38x10-6 NA 86013 98x10-5 55x10-6
Permeability Results
Torque Bond Strength
33
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
TH 101 amp CSAH 36 in Otsego Br 27758 86013 amp 86019 NovaChip
Penn Ave in Minneapolis Br 27758 Transpo T-48
TH 243 in Osceola Br 6347 Transpo T-48
Field Testing
Permeability Test (Water sealant) Torque Bond Test (Bond to bridge deck) Sand Patch Test (Friction) Surface Friction (Friction)
29
Permeability
Bridge Permeability (cmsec)
Wheel Path Non-Wheel Path
69006 0 10x10-6 9832 90x10-7 20X10-7 4190 NA NA 9036 22X10-7 19X10-7 6066 0 21X10-7 6067 18X10-7 NA
14810 38x10-6 NA 86013 98x10-5 55x10-6
Permeability Results
Torque Bond Strength
33
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Penn Ave in Minneapolis Br 27758 Transpo T-48
TH 243 in Osceola Br 6347 Transpo T-48
Field Testing
Permeability Test (Water sealant) Torque Bond Test (Bond to bridge deck) Sand Patch Test (Friction) Surface Friction (Friction)
29
Permeability
Bridge Permeability (cmsec)
Wheel Path Non-Wheel Path
69006 0 10x10-6 9832 90x10-7 20X10-7 4190 NA NA 9036 22X10-7 19X10-7 6066 0 21X10-7 6067 18X10-7 NA
14810 38x10-6 NA 86013 98x10-5 55x10-6
Permeability Results
Torque Bond Strength
33
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
TH 243 in Osceola Br 6347 Transpo T-48
Field Testing
Permeability Test (Water sealant) Torque Bond Test (Bond to bridge deck) Sand Patch Test (Friction) Surface Friction (Friction)
29
Permeability
Bridge Permeability (cmsec)
Wheel Path Non-Wheel Path
69006 0 10x10-6 9832 90x10-7 20X10-7 4190 NA NA 9036 22X10-7 19X10-7 6066 0 21X10-7 6067 18X10-7 NA
14810 38x10-6 NA 86013 98x10-5 55x10-6
Permeability Results
Torque Bond Strength
33
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Field Testing
Permeability Test (Water sealant) Torque Bond Test (Bond to bridge deck) Sand Patch Test (Friction) Surface Friction (Friction)
29
Permeability
Bridge Permeability (cmsec)
Wheel Path Non-Wheel Path
69006 0 10x10-6 9832 90x10-7 20X10-7 4190 NA NA 9036 22X10-7 19X10-7 6066 0 21X10-7 6067 18X10-7 NA
14810 38x10-6 NA 86013 98x10-5 55x10-6
Permeability Results
Torque Bond Strength
33
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Permeability
Bridge Permeability (cmsec)
Wheel Path Non-Wheel Path
69006 0 10x10-6 9832 90x10-7 20X10-7 4190 NA NA 9036 22X10-7 19X10-7 6066 0 21X10-7 6067 18X10-7 NA
14810 38x10-6 NA 86013 98x10-5 55x10-6
Permeability Results
Torque Bond Strength
33
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Bridge Permeability (cmsec)
Wheel Path Non-Wheel Path
69006 0 10x10-6 9832 90x10-7 20X10-7 4190 NA NA 9036 22X10-7 19X10-7 6066 0 21X10-7 6067 18X10-7 NA
14810 38x10-6 NA 86013 98x10-5 55x10-6
Permeability Results
Torque Bond Strength
33
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Torque Bond Strength
33
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
33
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
050
100150200250300350400450500
Req
uir
ed
To
rqu
e (
Nm
)
Non-Wheel Path Wheel Path
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
No
Dat
a N
o D
ata
Torque Test Results
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Sand Patch
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
36
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
37
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Mean Texture Depth Results
0
001
002
003
004
005
006
007
Br 69006(Taconite)
Br 3823(Basalt)
Br 4190(Basalt)
Br 9036(Basalt)
Br 9066(Flint)
Br 9067(Flint)
Br 14810(SafeLane)
Mea
n Te
xtur
e De
pth
(in)
Non-Wheel Path Wheel Path New Asphalt
Brush Concrete Worn Tined Concrete
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
0
001
002
003
004
005
006
007
Passing LaneNon-Wheel Path
Passing LaneWheel Path
Driving LaneNon-Wheel Path
Driving LaneWheel Path
Ave
rag
e M
ean
Textu
re D
ep
th (
in)
Position on Roadway
Br 14810 Passing vs Driving Lane
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Source httpwwwdotstatemnusmnroaddatapdfsMnROAD20Friction20(KJ20Law)20FINALpdf
Surface Friction
KJ Law (Dynatest) Skid Trailer
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Source httpwwwdotstatemnusresearchTS2011201112pdf
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Bridge 14810 (Barnesville MN) Avg Friction Numbers
0
10
20
30
40
50
60
70
80
90
100
2007 (Pre) 2007 (Post) 2008 2009 2010 2011 2012
Fric
tion
Num
ber
Year Tested
Ribbed Tires Smooth Tires
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Average Ribbed Tire Friction Number over Time
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6
Aver
age
Fric
tion
Num
ber
Years in Service Turf Drag PCC 69006 9823
9066 9067 14809
14810 27758 27019
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Analysis of Accident Data
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Analysis of Accident Data Public Safety Database 2003-2013 Incomplete data in 2003 and 2013 for Metro bridges
293 Reported Accidents were analyzed Bridge 86019 No reported accidents (On Ramp) Bridge 27758 1 reported accident (Penn Ave)
45
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Total Number of Accidents
46
73
90
25 22
14
44
19
2 4
0
10
20
30
40
50
60
70
80
90
100
9066 9067 9832 14809 14810 69006 27019 86013 6347
Tota
l Num
ber o
f Acc
iden
ts
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Month
47
0
10
20
30
40
50
60
70To
tal N
umbe
r of A
ccid
ents
Month
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Surface Conditions
48
37
39
9
7
3 5
Dry
Ice PackedSnow
Snow
Wet
Slush
Other
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Overlay Cross-Section
49
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Overlay Cross-Section
50
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Overlay Cross-Section
51
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Weather during Ice Packed Snow Surface Conditions
52
21
34
27
5
6 2
5
Clear
Cloudy
Snow
Sleet
Blowing Snow
Rain
Other
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Number of Crashes per Million Vehicles
53
0
02
04
06
08
1
12
9066 9067 9832 14809 14810 69006 27019 86013 6347
Num
ber o
f Cra
shes
per
Mill
ion
Vehi
cles
Before Installation After Installation
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Accidents Compared to Total Accidents in MN
54
000
001
002
003
004
005
006
007
008
9066 9067 9832 S 9832 N 14809 14810 69005 69006 27019 27020 86013 6347
Aver
age
Perc
enta
ge o
f Ann
ual C
rash
es in
Min
neso
ta
Before After
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Summary Site Visits All currently performing satisfactorily Negligible permeability Sufficient bond strength between bridge deck and
system Mean texture depth steadily decreases after
installation Friction numbers have decreased due to these
distresses
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Summary Accident Analysis Most conditions occurred with dry or ice packed snow
surface conditions when the high friction has very little effect
Over half of the ice packed snow conditions occurred with clear or cloudy weather
There is a marginal reduction in accidents Accident rates are similar to bridge decks without an
epoxy overlay system
56
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Special Thanks To MnDOT Funding for this project Coordination for site visits Setting up traffic control Providing data for analysis
57
Thank You For Your Time Questions
58
Thank You For Your Time Questions
58