Interchange Study 2013 - swrdc.org
Transcript of Interchange Study 2013 - swrdc.org
I-90 Interchange
Study
TABLE OF CONTENTS Prepared by
Southwest Regional Development Commission and
Region Nine Development Commission
May 2013
TABLE OF CONTENTS .............................................................................................................. i
INTRODUCTION......................................................................................................................... 1
1.1 Study Area ........................................................................................................................................... 1
1.2 Study Goals and Objectives ................................................................................................................. 1
EXISTING PHYSICAL CONDITIONS..................................................................................... 3
2.1 Existing Land Use ................................................................................................................................ 3
2.1.1 Rock County ................................................................................................................................. 3
2.1.2 Nobles County .............................................................................................................................. 3
2.1.3 Jackson County ............................................................................................................................. 4
2.1.4 Martin County .............................................................................................................................. 4
2.1.5 Faribault County ........................................................................................................................... 5
2.2 Roadways and Roadway Network ...................................................................................................... 6
2.3 Existing Wayside Rest Areas and Travel Information Centers .......................................................... 10
2.3.1 Rest areas along I-90 .................................................................................................................. 10
EXISTING TRAFFIC VOLUMES ........................................................................................... 11
3.1 Existing Traffic Volumes .................................................................................................................... 11
3.2 Crash Data ......................................................................................................................................... 14
3.3 Crash Summary ................................................................................................................................ 14
3.4 Crash Experience ............................................................................................................................... 16
3.4.1 Crash Locations, Rock County .................................................................................................... 16
3.4.2 Crash Locations, Nobles County ................................................................................................. 18
3.4.3 Crash Locations, Jackson County ............................................................................................... 20
3.4.4 Crash Locations, Martin County ................................................................................................. 22
3.4.5 Crash Locations, Faribault County ............................................................................................. 24
FUTURE TRAFFIC VOLUMES AND OPERATIONS ......................................................... 26
4.1 Survey Results ................................................................................................................................... 26
4.1.1. Rock County ........................................................................................................................ 26
4.1.2. Nobles County ..................................................................................................................... 26
4.1.3. Jackson County .................................................................................................................... 27
4.1.4. Martin County ..................................................................................................................... 28
4.1.5. Faribault County .................................................................................................................. 29
SUMMARY ................................................................................................................................. 30
4.1 Overview ........................................................................................................................................... 30
APPENDIX .................................................................................................................................. 32
5.1 Community Survey ................................................................................................................. 32
LIST OF TABLES AND FIGURES
Figure 1.1: I-90 Corridor Study Area ............................................................................................. 2
Table 2.1: Interchanges along the I-90 corridor within the study area ........................................... 7
Table 2.2: Bridge/overpass locations along the I-90 corridor within the study area ...................... 8
Table 3.1: MnDOT Data Products – Traffic Mapping Application.............................................. 12
Table 3.2: Crash Rate .................................................................................................................... 14
Table 3.3: Severity Rate ................................................................................................................ 15
Table 3.4: Crash Cost .................................................................................................................... 15
Table 3.5: Fatal and Incapacitating crashes along the I-90 corridor in Rock County .................. 17
Table 3.6: Fatal and Incapacitating crashes along the I-90 corridor in Nobles County ................ 19
Table 3.7: Fatal and Incapacitating crashes along the I-90 corridor in Jackson County .............. 21
Table 3.8: Fatal and Incapacitating crashes along the I-90 corridor in Martin County ................ 23
Table 3.9: Fatal and Incapacitating crashes along the I-90 corridor in Faribault County ............ 25
I90 – Nobles County – Between Adrian and Rushmore ............................................................... 26
I-90 Interchange Study May 2013 1
Participating Counties
Rock County
Nobles County
Jackson County
Martin County
Faribault County
See Figure 1.1 of Map
INTRODUCTION
MnDOT District 7 has requested assistance from the Southwest Regional Development
Commission (SRDC) and Region Nine Development Commission (RNDC) to conduct an
interchange study along the I-90 corridor. The study will focus on current interchange locations
as well as the need for future interchanges, based upon potential development.
1.1 Study Area
The study area will include that portion of I-90 that exists within the counties of Rock,
Nobles, Jackson, Martin, and Faribault. The study area also directly impacts the cities of Beaver
Creek, Luverne, Magnolia, (Rock County); Adrian and
Worthington (Nobles County); Jackson (Jackson County);
Sherburne, Welcome, and Fairmont (Martin County); and
Blue Earth (Faribault County).
1.2 Study Goals and Objectives
The primary goal of the study is to determine if the current interchange structure along
the I-90 corridor, within the study area, is adequate to meet current needs and to assess future
needs based upon potential growth demand.
I-90 Interchange Study May 2013 2
Figure 1.1: I-90 Corridor Study Area
I-90 Interchange Study May 2013 3
EXISTING PHYSICAL CONDITIONS
2.1 Existing Land Use
Interstate 90 runs east-west through the study area. Land use is predominantly
agricultural in nature with small areas of Commercial and Industrial development located at
communities along the corridor.
2.1.1 Rock County
Rock County is located in the southwest corner of Minnesota on the borders of
South Dakota and Iowa. The total land area of Rock County is 482.84 square miles. Rock
County consists of 9 incorporated cities, 2 unincorporated towns, and 12 townships. According
to the 2010 Census, the county had a total population of 9,687. Fifty-nine percent of the
population lives in an incorporated area, or city.
The zoning for a quarter mile either side of the I-90
Corridor, in Rock County, is A-1, Limited Agriculture. The
exception to this is within close proximity of the three cities
along the I-90 corridor: City of Magnolia, the City of
Luverne, and the City of Beaver Creek. Near Magnolia and
Beaver Creek, certain areas are zoned as I-1, General
Industry Districts. The City of Luverne has zoning control on
either side of I-90 at the Highway 75 interchange where it is zoned Highway Commercial and
Commercial Retail.
2.1.2 Nobles County
Nobles County covers a total land area of 722.33 square miles. It consists of 11
incorporated cities, 3 unincorporated towns, and 20 townships. According to the 2010 Census,
the county had a total population of 21,378. Seventy-seven point five percent of the population
lives in an incorporated area. The majority of the applicable zoning along the I-90 corridor in
Nobles County is classified as Agricultural Preservation District (AG). The exception to this is
within close proximity of the three cities along the I-90 corridor in Nobles County: the City of
Adrian, the City of Rushmore, and the City of Worthington. At the Adrian Interchange (I-90 and
I-90 Interchange Study May 2013 4
TH 91), both the north and south side of the Interstate is a Highway Business (B-1) District.
The area for a half mile in each direction surrounding the CSAH 13 and I-90 intersection near
Rushmore is also zoned B-1.
I-90 bisects the City of Worthington. Zoning in the Worthington area consists of
Highway Commercial, a PUD (Industrial Park), and Highway Business Districts on the north
side of the Interstate. The south side of the Interstate varies from Agricultural on the far west side
and transitions to Residential (single and multi-family), Highway Commercial, General
Industrial, back to Highway Commercial and Residential on the far east side of town. For a mile
beyond the city limits, I-90 transitions to a General Industry District before changing back to
Agricultural.
2.1.3 Jackson County
Jackson County has a total land area of 719.46 square miles and consists of 6
incorporated cities, one unincorporated town, and 20 townships. According to the 2010 Census,
the county had a total population of 10,266. Fifty-nine percent of the population lives in an
incorporated area.
The majority of the zoning along the I-90 corridor
in Jackson County is classified Agricultural. The
exceptions are: a small individual parcel by the Lakefield
exit (Exit 64) zoned as General Business, however the
current land use is agricultural. Also at the I-90 and TH 71
Interchange (Jackson) where the City of Jackson zoning
designations are Service Business and General Industrial
Districts.
2.1.4 Martin County
Martin County covers a total of 733.24 square miles of territory and is located in south
central Minnesota. Martin County consists of 9 incorporated cities and 20 townships. According
to the 2010 Census, the county had a total population of 20,784. Seventy-four percent of the
population lives in an incorporated area, or city. The remaining twenty six percent lives in an
unincorporated area, or township.
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Zoning along the I-90 corridor in Martin County is mainly Agricultural. However the
area along the corridor, within the City of Fairmont, is zoned Commercial/Industrial.
2.1.5 Faribault County
Faribault County covers a total of 712.48 square miles of territory and is located in south
central Minnesota. Faribault County consists of 11 incorporated cities and 20
townships. According to the 2010 Census, the county had a total population of 14,553. Sixty-
nine percent of the population lives in an incorporated area, or city.
Zoning along the I-90 corridor, in Faribault County, is mainly A-2 (General Agriculture
District); however, in the City of Blue Earth, near the I-90/Hwy 169 intersection, the area is
zoned B-2 (Highway Business) and L-1 (Industrial).
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2.2 Roadways and Roadway Network
Within the corridor study area there are a total of 26 interchanges and 30
bridges/overpasses. Table 2.1 provides a summary of the interchange locations and table 2.2
provides an overview of the overpass/bridge locations.
The interchanges are relatively evenly spaced with five in Rock County, six in Nobles
and Jackson County and five each in Martin, and Faribault County. Spacing varies from as little
as 1.3 miles between County Highway 4 and County Highway 6 at Beaver Creek in Rock
County, to as great as an 8.95 mile separation between State Highway 86 (Lakefield) and US
Highway 71 (Jackson) in Jackson County. It is interesting to note that each county has a range
of separation between interchanges that varies from approximately 2 miles to as great as 8 miles;
however, the five interchanges in Jackson County range from 6.15 miles apart to 8.95 miles
apart.
There are a total of 29 overpasses/bridges along the I-90 corridor between Rock County
and Faribault County.
County # of overpasses/bridges
Rock County 3
Nobles County 6
Jackson County 6
Martin County 6
Faribault County 8
More information on the spacing between overpasses can be found in Table 2.2
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Table 2.1: Interchanges along the I-90 corridor within the study area
County Intersection Feature Mile Post
Rock South Dakota State Boundary TO Trunk Hwy 23 State Line to Interchange 1.06 miles
Rock I-90 and Trunk Hwy 23 TO I-90 and CSAH 4 Interchange to Interchange 3.85 miles
Rock I-90 and CSAH 4 TO I-90 and CSAH 6 Interchange to Interchange 5.08 miles
Rock I-90 and CSAH 6 TO I-90 and US Trunk Highway 75 Interchange to Interchange 12.49 miles
Rock I-90 and US Trunk Highway 75 TO I-90 and CSAH 3 Interchange to Interchange 18.49 miles
Rock (R) to Nobles (N) I-90 and CSAH 3 (R) TO I-90 and MN Trunk Highway 91 (N) Interchange to Interchange 26.11 miles
Nobles I-90 and MN Trunk Highway 91 TO I-90 and CSAH 13 Interchange to Interchange 33.71 miles
Nobles I-90 and CSAH 13 TO I-90 and CSAH 25 Interchange to Interchange 42.04 miles
Nobles I-90 and CSAH 25 TO I-90 and US Trunk Highway 59 Interchange to Interchange 43.75 miles
Nobles I-90 and US Trunk Highway 59 TO I-90 and MN Trunk Highway 60 Interchange to Interchange 45.17 miles
Nobles I-90 and MN Trunk Highway 60 TO I-90 and CSAH 3 Interchange to Partial Interchange 47.82 miles
Nobles I-90 and CSAH 3 TO MN Trunk Highway 264/CSAH 1 Interchange to Interchange 50.75 miles
Jackson I-90 and MN Trunk Highway 264/CSAH 1 TO I-90 and CSAH 9 Interchange to Interchange 57.73 miles
Jackson I-90 and CSAH 9 TO I-90 and MN Trunk Highway 86 Interchange to Interchange 64.76 miles
Jackson I-90 and MN Trunk Highway 86 TO I-90 and US Trunk Highway 71 Interchange to Interchange 73.80 miles
Jackson I-90 and US Trunk Highway 71 TO I-90 and CSAH 29 Interchange to Interchange 80.11 miles
Jackson (J) to Martin (M) I-90 and CSAH 29 TO I-90 and MN Trunk Highway 4 Interchange to Interchange 87.32 miles
Martin I-90 and MN Trunk Highway 4 TO I-90 and MN Trunk Highway 263/CSAH 27 Interchange to Interchange 93.68 miles
Martin I-90 and MN Trunk Highway 263/CSAH 27 TO I-90 and CSAH 39 Interchange to Interchange 99.81 miles
Martin I-90 and CSAH 39 TO I-90 and MN Trunk Highway 15 Interchange to Interchange 102.05 miles
Martin I-90 and MN Trunk Highway 15 TO I-90 and MN Trunk Highway 262/ CSAH 53 Interchange to Interchange 107.20 miles
Martin (M) to Faribault (F) I-90 and MN Trunk Highway 262/ CSAH 53 (M) TO I-90 and CSAH 1 (F) Interchange to Interchange 113.27 miles
Faribault I-90 and CSAH 1 To I-90 and US Trunk Highway 169 Interchange to Interchange 119.91 miles
Faribault I-90 and US Trunk Highway 169 TO I-90 and MN Trunk Highway 254/CSAH 17 Interchange to Interchange 128.57 miles
Faribault I-90 and MN Trunk Highway 254/CSAH 17 TO I-90 and MN Trunk Highway 253 Interchange to Interchange 134.59 miles
Faribault I-90 and MN Trunk Highway 253 TO I-90 and MN Trunk Highway 22 Interchange to Interchange 138.69 miles
Faribault to Freeborn I-90 and MN Trunk Highway 22 to Freeborn County Line Interchange to County Line 142.79 miles
I-90 Interchange Study May 2013 8
Table 2.2: Bridge/overpass locations along the I-90 corridor within the study area
County Intersection Feature Mile Post
Rock South Dakota State Boundary TO I-90 and CSAH 11 State Line to Overpass 9.33 miles
Rock I-90 and CSAH 11 TO I-90 and CSAH 9 Overpass to Overpass 14.48 miles
Rock I-90 and CSAH 9 TO I-90 and County Rd 55 Overpass to Overpass 16.48 miles
Nobles I-90 and County Rd 55 TO I-90 and CSAH 19 Overpass to Overpass 22.51 miles
Nobles I-90 and CSAH 19 TO I-90 and CSAH 35 Overpass to Overpass 25.94 miles
Nobles I-90 and CSAH 35 TO I-90 and CSAH 15 Overpass to Overpass 29.68 miles
Nobles I-90 and CSAH 15 TO I-90 and County Rd 60 Overpass to Overpass 31.68 miles
Nobles I-90 and County Rd 60 TO I-90 and County Rd 61 Overpass to Overpass 35.72 miles
Nobles I-90 and County Rd 61 TO I-90 and CSAH 9 Overpass to Overpass 37.71 miles
Nobles (N) to Jackson (J) I-90 and CSAH 9 (N) TO I-90 and CSAH 5 (J) Overpass to Overpass 54.69 miles
Jackson I-90 and CSAH 5 TO I-90 and County Rd 67 Overpass to Overpass 62.73 miles
Jackson I-90 and County Rd 67 TO I-90 and CSAH 17 Overpass to Overpass 68.77 miles
Jackson I-90 and CSAH 17 TO I-90 and CSAH 14 Overpass to Overpass 71.80 miles
Jackson I-90 and CSAH 14 TO I-90 and CSAH 23 Overpass to Overpass 74.83 miles
Jackson I-90 and CSAH 23 TO I-90 and CSAH 34 Overpass to Overpass 75.63 miles
Jackson I-90 and CSAH 34 TO I-90 and County Rd 85 Overpass to Overpass 78.09 miles
Jackson (J) to Martin (M) I-90 and County Rd 85 (J) TO I-90 and CSAH 7 (M) Overpass to Overpass 84.16 miles
Martin I-90 and CSAH 7 TO I-90 and CSAH 28/CSAH 23 Overpass to Overpass 91.28 miles
Martin I-90 and CSAH 28/CSAH 23 TO I-90 and County Rd 130 Overpass to Overpass 96.82 miles
Martin I-90 and County Rd 130 TO I-90 and CSAH 32/CSAH 41 Overpass to Overpass 101.32 miles
Martin I-90 and CSAH 32/CSAH 41 TO I-90 and Twp. 230th Avenue Overpass to Overpass 104.17 miles
Martin I-90 and Twp. 230th Avenue TO I-90 and CSAH 59 Overpass to Overpass 110.24 miles
Martin (M) to Faribault (F) I-90 and CSAH 59 (M) TO I-90 and CSAH 5 (F) Overpass to Overpass 115.78 miles
Faribault I-90 and CSAH 5 TO I-90 and CSAH 6 Overpass to Overpass 119.49 miles
Faribault I-90 and CSAH 6 TO I-90 and CSAH 11 Overpass to Overpass 121.49 miles
Faribault I-90 and CSAH 11 TO I-90 and CSAH 13 Overpass to Overpass 124.28 miles
Faribault I-90 and CSAH 13 TO I-90 and County Rd 109 Overpass to Overpass 126.54 miles
I-90 Interchange Study May 2013 9
County Intersection Feature Mile Post
Faribault I-90 and County Rd 109 TO I-90 and CSAH 19 Overpass to Overpass 130.56 miles
Faribault I-90 and CSAH 19 TO I-90 and County Rd 221 Overpass to Overpass 132.57 miles
Faribault I-90 and County Rd 221 TO I-90 and CSAH 31 Overpass to Overpass 141.74 miles
Faribault to Freeborn I-90 and CSAH 31 TO I-90 and Freeborn County Line Overpass to County Line 142.79 miles
I-90 Interchange Study May 2013 10
I90 eastbound
Beaver Creek (milepost 0)
Adrian (milepost 24)
Clear Lake (milepost 69)
Blue Earth (mile post 119)
Hayward (milepost 162)
I90 westbound
Adrian (milepost 25)
Des Moines River (milepost 72)
Blue Earth (mile post 119)
Oakland Woods (milepost 171 in
Freeborn County)
2.3 Existing Wayside Rest Areas and Travel Information Centers
Wayside Rest Areas are situated at four
different locations along the I-90 corridor study area:
MN/SD border (east bound lane is owned by
Minnesota and west bound lane owned by South
Dakota), Adrian, Jackson, and Blue Earth. These
Wayside Rest Areas are located at approximately 50-
mile intervals, with the exception of the MN/SD state
border and Adrian which is spaced at 25 miles. There
is also a Travel Information Center south of I-90 and
the city of Worthington (Nobles County) near the junction of TH 59 and 60.
2.3.1 Rest areas along I-90
I-90 Interchange Study May 2013 11
EXISTING TRAFFIC VOLUMES
Average annual daily traffic (AADT) volumes and heavy commercial average annual traffic
(HCAADT) volumes vary along the I-90 corridor. AADT volumes and HCAADT volumes
provide a useful and simple measurement of how busy a road segment is. Based on this
information accurate estimates can be made for resurfacing and if the road segment needs
additional interchanges. Below are the 2010 and 2011 AADT volumes and HCAADT volumes
for the five counties includes in the study.
3.1 Existing Traffic Volumes
The Annual Average Daily Traffic (AADT) measures the total volume of vehicle traffic
of a highway or road for a year divided by 365 days. AADT is a useful and simple measurement
of how busy the road is. The table below provides data on existing traffic volumes for this
segment of I-90. The AADT ranges from 7,800 (Jackson County) to a high of 12,200 in Rock
County.
The table also provides data on the HCAADT (Heavy Commercial Annual Average
Daily Traffic) for this same segment of roadway. HCAADT ranges between 850 in Nobles
County, to as high as 1,750 in Martin County. The higher heavy commercial vehicle flow in
Martin County is likely attributed to the truck traffic associated with the ethanol facility.
In all counties, with the exception of Nobles, the HCAADT has remained the same or
increased. The lower AADT and HCAADT on I-90 through Nobles County may be a reflection
of the TH 60 construction over the past two years.
I-90 Interchange Study May 2013 12
Table 3.1: MnDOT Data Products – Traffic Mapping Application
BEGIN DESCRIPTION END DESCRIPTION CITY NAME
BEGIN TRUE MILES
END TRUE MILES
2010 AADT
2010 HCAADT
2011 AADT
2011 HCAADT
RO
CK
CO
UN
TY
South Dakota – Minnesota State Line Jct MNTH-23
0 1.057 12200 1400
1400
Jct MNTH-23 EB Exit Ramp to CSAH-4
1.057 3.713 10300 1250
1250
EB Exit Ramp to CSAH-4
EB Entrance Ramp from CSAH-6
Beaver Creek city 3.713 5.249 9900 1200
1200
EB Entrance Ramp from CSAH-6 Jct USTH-75 SB Luverne city 5.249 12.476 10000 1200
1200
Jct USTH-75 SB EB Entrance Ramp from CSAH-3
12.476 18.68 9900 940
950
NO
BL
ES
CO
UN
TY
EB Entrance Ramp from CSAH-3 Jct MNTH-91 Adrian city 18.68 26.62 850 8800 850
Jct MNTH-91 EB Entrance Ramp from CSAH-13 26.62 33.897 870 8500 820
EB Entrance Ramp from CSAH-13 Jct CSAH-25 Worthington city 33.897 42.255 880 8600 830
Jct CSAH-25 Jct USTH-59 Worthington city 42.255 43.739 890 9800 930
Jct USTH-59 Jct MNTH-60 Worthington city 43.739 45.148 990 9300 890
Jct MNTH-60
Jct MNTH-264;Nobles-Jackson County line 45.148 50.738 1200 8000 1150
JA
CK
SO
N C
OU
NT
Y JCT MNTH-264;Nobles
–Jackson County line EB Entrance Ramp from CSAH-9 50.738 57.926 7900 1150 1150
EB Entrance Ramp from CSAH-9 Jct MNTH-86 57.926 64.767 8100 1150 1150
Jct MNTH-86 Jct USTH-71 Jackson city 64.767 73.813 8000 1150 1150
Jct USTH-71 WB Exit ramp to CSAH-29 73.813 80.281 7800 1500 1500
WB Exit Ramp to CSAH-29 Jct MNTH-4 80.281 87.309 8400 1550 1550
I-90 Interchange Study May 2013 13
BEGIN DESCRIPTION END DESCRIPTION CITY NAME
BEGIN TRUE MILES
END TRUE MILES
2010 AADT
2010 HCAADT
2011 AADT
2011 HCAADT
MA
RT
IN C
OU
NT
Y
Jct MNTH-4 Jct MNTH-263 87.309 93.675 8200 1600 1650
Jct MNTH-263 WB Exit Ramp to CSAH-39 93.675 100.003 8800 1700 1700
WB Exit Ramp to CSAH-39 Jct MNTH-15 Fairmont city 100.003 102.053 9700 1750 1750
Jct MNTH-15 CSAH-53 Bridge Overhead 102.053 107.202 9000 1700 1700
CSAH-53 Bridge Overhead Jct CSAH-1 107.202 113.272 9000 1400 1500
FA
RIB
AU
L
T C
OU
NT
Y Jct CSAH-1 Jct USTH-169 Blue Earth city 113.272 119.909 1350 9000 1500
Jct USTH-169 Jct MNTH-254 119.909 128.538 1350 8800 1500
Jct MNTH-254 Jct MNTH-253 128.538 134.546 1350 9100 1500
Jct MNTH-253 Jct MNTH-22 134.546 138.63 1350 9400 1550
Jct MNTH-22 Jct MNTH-109 138.63 146.292 1950 8300 2100
I-90 Interchange Study May 2013 14
3.2 Crash Data
Interchanges provide access on and off I-90. There are a number of points of conflict
around these interchanges. Design can often help to mitigate the risk of a crash. Designing an
interchange with fewer points of conflict or engineering new interchanges are two ways to make
a road segment safer. Analyzing the interchanges along the I-90 corridor, in regards to crash
data, can help illuminate problematic interchanges. This report includes Interchange crash data
from 2002-2011 and crash data from 2003 to 2012 for the five counties included in the study.
3.3 Crash Summary
Between the years 2002 and 2011, there were a total of 671 crashes reported amongst the
26 interchanges along the five county corridor in District 7. In that ten year time span, the
crashes resulted in at least 8 fatalities (K), 16 crashes where there was an incapacitating injury
(A), 49 crashes where there was at least one non-incapacitating injury, 94 crashes where there
was an unknown or possible injury, and 504 where there was property damage only as a result of
the crash.
MnDOT has a crash rate factor which incorporates the total crashes, the approach volume
of traffic and the number of days into a formula. The highest five crash rates at the I-90
interchanges were in Jackson, Martin and Faribault counties.
Table 3.2: Crash Rate
County RP Description Crash Rate
Jackson 073+00.799 TH 71/JACKSONCO 1.19
Martin 102+00.051 TH 15/FAIRMONT 1.05
Martin 093+00.682 TH 263 RTCSAH27 LT/MARTINCO 0.96
Faribault 119+00.914 TH 169/BLUE EARTH 0.96
Martin 107+00.195 TH 262 LTCSAH53 RT/GRANADA 0.94
MnDOT has a severity rate range that places a higher weight on a fatal crash and a lower
weight on a property damage crash. There are 10 Interchanges with a severity rate over 1.0.
I-90 Interchange Study May 2013 15
Their locations are in all five of the study area counties, with the highest severity rate of 1.77 at
the TH 71 Interchanges at Jackson.
Table 3.3: Severity Rate
County RP Description Severity Rate
Jackson 073+00.799 TH 71/JACKSONCO 1.77
Faribault 119+00.914 TH 169/BLUE EARTH 1.53
Martin 093+00.682 TH 263 RTCSAH27 LT/MARTINCO 1.47
Martin 102+00.051 TH 15/FAIRMONT 1.41
Rock 001+00.058 TH 23 LT CSAH19 RT/ROCKCO 1.37
Nobles 045+00.173 TH 60/WORTHINGTON 1.22
Martin 107+00.195 TH 262 LTCSAH53 RT/GRANADA 1.22
Martin 087+00.321 TH 4/SHERBURN 1.08
Nobles 026+00.626 TH 91/ADRIAN 1.08
Faribault 138+00.687 TH 22/S OFWELLS 1.07
MnDOT has applied crash cost factors to the type of crashes that occurred to calculate a
measurable fiscal cost. The more severe the crash, such as a fatality, the higher the crash cost.
Below are interchanges where the cost factor was greater than $100,000. The highest crash cost
calculated was the I-90 / TH 71 Interchange at Jackson where there cost was calculated at
$252,580.
Table 3.4: Crash Cost
County
RP
Description
Crash Cost
Jackson 073+00.799 TH 71/JACKSONCO $252,580
Nobles 045+00.173 TH 60/WORTHINGTON $202,280
Faribault 119+00.914 TH 169/BLUE EARTH $199,020
Rock 012+00.481 TH 75/LUVERNE $177,960
Martin 102+00.051 TH 15/FAIRMONT $172,480
Rock 001+00.058 TH 23 LT CSAH19 RT/ROCKCO $170,500
Martin 093+00.682 TH 263 RTCSAH27 LT/MARTINCO $168,660
Martin 087+00.321 TH 4/SHERBURN $129,620
Martin 107+00.195 TH 262 LTCSAH53 RT/GRANADA $115,840
I-90 Interchange Study May 2013 16
3.4 Crash Experience
3.4.1 Crash Locations, Rock County
Between the years 2002 and 2011, there were a total of 113 crashes reported at the five
interchanges in Rock County. In that ten year time span, there were three crashes that resulted in
at least 1 fatality (K), 1 crash where there was an incapacitating injury (A), 11 crashes where
there was at least one non-incapacitating injury, 18 crashes where there was an unknown or
possible injury, and 80 where there was property damage only as a result of the crash.
MnDOT has a crash rate factor which incorporates the total crashes, the approach volume
of traffic and the number of days into a formula and a severity rate range that places a higher
weight on a fatal crash and a low weight on a property damage crash. The highest crash rate
intersection and severity rate was the TH 23 / CSAH 19 Interchange at mile marker 1+00.58 at
0.89 and 1.37 respectively.
The highest crash cost calculated was the I-90 / TH 75 (RP 12+00.481) Interchange at
Luverne where there was one fatal crash, one type A and 3 type B crashes with a cost of
$177,960. Total calculated crash cost for the five interchanges over the ten years was $506,200
The data comparison indicates that the fatality at TH 23 was likely to be a 2002 crash and
did not show up in the 2003-2012 data. There were six fatal crashes along the corridor, three at
or near Interchanges.
I-90 Interchange Study May 2013 17
Table 3.5: Fatal and Incapacitating crashes along the I-90 corridor in Rock County
I-90 Crashes, Rock Co 2003-2012 data Reference Point Type K/ A # Fatal # Vehicles
Beaver Creek Rest Area (east bound) 0
Jct MNTH-23 001+00.058
CSAH-4 003+00.851
CSAH-6 005+00.077 K 1 1
Between Exits 006+00.400 K 1 1
Between Exits 007+00.500 K 1 1
Between Exits 007+00.650 A 0 1
Between Exits 010+00.800 K 1 2
Within 1 mile 012+00.287 A 0 1
Jct USTH-75 012+00.481 K 1 1
Between Exits 014+00.987 A 0 2
Between Exits 016+00.300 A 0 3
Between Exits 016+00.500 A 0 1
Between Exits 017+00.300 K 2 3
CSAH-3 018+00.487
I-90 Interchange Study May 2013 18
3.4.2 Crash Locations, Nobles County
Between the years 2002 and 2011, there were a total of 163 crashes reported at the six
interchanges in Nobles County. In that ten year time span, there was one crash which resulted in
at least 1 fatality (K), 2 crashes where there was an incapacitating injury (A), 12 crashes where
there was at least one non-incapacitating injury, 18 crashes where there was an unknown or
possible injury, and 130 where there was property damage only as a result of the crash.
MnDOT has a crash rate factor which incorporates the total crashes, the approach volume
of traffic and the number of days into a formula and a severity rate range that places a higher
weight on a fatal crash and a low weight on a property damage crash. The highest crash rate
intersections were at TH 60 (CR 0.88, RP 45+00.173) and TH 91 (CR 0.85, RM 26+00.626); and
highest severity rate was the TH 60 Interchange at reference mark 45+00.173.
The highest crash cost calculated was the I-90 / TH 60 Interchange at Worthington
where there was one fatal crash, one type A and 5 type B crashes with a cost of $202,280. Total
calculated crash cost for the six interchanges over the ten years was $423,200
The data comparison indicates that the fatality at TH 60 remained in the 2003-2012 data
base. There were ten fatal crashes along the corridor, three at or near Interchanges. Two fatal
crashes occurred near the Adrian rest area, one within a mile of TH 91, one within a mile of the
Nobles CSAH 13 Interchange and one within a mile of the Nobles CSAH 3 Interchange. The
remaining four fatalities occurred between the interchanges or accesses to the Interstate.
I-90 Interchange Study May 2013 19
Table 3.6: Fatal and Incapacitating crashes along the I-90 corridor in Nobles County
I-90 Crashes, Nobles Co 2003-2012 data Reference Point Type K/ A # Fatal # Vehicles
Adrian Rest Area (west and east bound) 24.1 – 24.9
Adrian Rest Area 024+00.000 K 1 2
Adrian Rest Area 024+00.000 K 1 1
Within 1 mile 026+00.200 K 1 1
Jct MNTH-91 026+00.626 A 0 1
Within 1 mile 026+00.899 A 0 2
Between Interchanges 029+00.000 K 2 1
Between Interchanges 030+00.000 A 0 2
Within 1 mile 032+00.700 A 0 1
Within 1 mile 032+00.800 K 1 1
CSAH-13 033+00.707
Between Interchanges 035+00.000 A 0 1
Between Interchanges 035+00.719 K 1 1
Between Interchanges 036+00.796 K 1 3
Between Interchanges 040+00.500 K 1 1
Within 1 mile 041+00.300 A 0 1
Jct CSAH-25 042+00.263
Within 1 mile 042+00.000 A 0 1
Jct USTH-59 043+00.745
Jct MNTH-60 045+00.173 K 1 1
Within 1 mile 045+00.200 A 0 1
Worthington Weigh Station 46+00.xxx
Within 1 mile 046+00.791 A 0 2
Nobles CSAH 3 047+00.816
Within 1 mile 048+00.400 K 1 1
I-90 Interchange Study May 2013 20
3.4.3 Crash Locations, Jackson County
Between the years 2002 and 2011, there were a total of 96 crashes reported at the five
interchanges in Jackson County. In that ten year time span, there was one crash resulted in at
least 1 fatality (K), 5 crashes where there was an incapacitating injury (A), 7 crashes where there
was at least one non-incapacitating injury, 10 crashes where there was an unknown or possible
injury, and 73 where there was property damage only as a result of the crash.
MnDOT has a crash rate factor which incorporates the total crashes, the approach volume
of traffic and the number of days into a formula and a severity rate range that places a higher
weight on a fatal crash and a low weight on a property damage crash. The highest crash rate and
severity rate intersection was at TH 71 at Jackson (CR 1.19, SR 1.22, RP 73+00.799). The
highest crash cost calculated was the I-90 / TH 71 Interchange at Jackson where there was one
fatal crash, three type A and 3 type B crashes with a cost of $252,580. Total calculated crash
cost for the five interchanges over the ten years was $415,820.
The data comparison indicates that the fatality identified at TH 71 (Jackson) was likely to
be a 2002 crash and dropped from the 2003-2012 data base. There was one fatal crash along the
corridor within one mile of Jackson CSAH 9.
I-90 Interchange Study May 2013 21
Table 3.7: Fatal and Incapacitating crashes along the I-90 corridor in Jackson County
I-90 Crashes, Jackson Co 2003-2012 data Reference Point Type K/ A # Fatal # Vehicles
Jct MNTH-264; Nobles-Jackson Co line 050+00.748
Between Interchanges 056+00.188 A 0 1
Within 1 mile 057+00.434 K 1 2
CSAH-9 057+00.734
Jct MNTH-86 064+00.763 A 0 1
Clear Lake Rest Area (eastbound) 69+00.4xx
Between Interchanges 069+00.650 A 0 1
Des Moines River Rest Area (westbound) 72+00.5xx
Jct USTH-71 073+00.799 A 0 1
Jct USTH-71 073+00.799 A 0 1
Within 1 mile 073+00.828 A 0 1
Between Interchanges 075+00.794 A 0 1
Between Interchanges 076+00.200 A 0 1
Between Interchanges 076+00.496 A 0 1
CSAH-29 080+00.110
I-90 Interchange Study May 2013 22
3.4.4 Crash Locations, Martin County
Between the years 2002 and 2011, there were a total of 182 crashes reported at the five
interchanges in Martin County. In that ten year time span, there were 2 crashes that resulted in at
least one fatality (K), 6 crashes where there was an incapacitating injury (A), 7 crashes where
there was at least one non-incapacitating injury, 30 crashes where there was an unknown or
possible injury, and 137 where there was property damage only as a result of the crash.
MnDOT has a crash rate factor which incorporates the total crashes, the approach volume
of traffic and the number of days into a formula and a severity rate range that places a higher
weight on a fatal crash and a low weight on a property damage crash. The highest crash rate
intersection was the TH15 Interchange in Fairmont with a rating of 1.41and the highest severity
rate was the TH 263 Interchange at mile marker 093+00.682 at 1.47.
The highest crash cost calculated was the I-90 / TH 15 (RP 102+00.051) Interchange at
Fairmont. There were no fatal crashes at this location, but there were 2 type A and 2 type B
crashes with a cost of $172,480. Total calculated crash cost for the five interchanges over the ten
years was $658,580.
I-90 Interchange Study May 2013 23
Table 3.8: Fatal and Incapacitating crashes along the I-90 corridor in Martin County
I-90 Crashes, Martin Co 2003-2012 data Mile Marker Type K/ A # Fatal # Vehicles
WB Exit ramp to CSAH-29 080+00.281
Jct MNTH-4 087+00.309
Within 1 mile either direction 087+00.321 K 1 2
MNTH-263 093+00.675
Within 1 mile either direction 093+00.682 A 0 1
Within 1 mile either direction 093+00.498 A 0 1
WB Exit Ramp to CSAH-39 100+00.003
Within 1 mile either direction 099+00.369 K 1 1
Within 1 Mile either direction 099+00.807 A 0 1
Jct MNTH-15 102+00.053
Within 1 mile either direction 102+00.051 A 0 2
CSAH-53 Bridge Overhead 107+00.202
Within 1 mile either direction 107+00.195 K 1 1
Within 1 mile either direction 107+00.677 A 0 1
Within 1 mile either direction 107+00.963 A 0 1
Between Interchanges 110+00.750 A 0 1
Jct CSAH-1 113+00.272
I-90 Interchange Study May 2013 24
3.4.5 Crash Locations, Faribault County
Between the years 2002 and 2011, there were a total of 117 crashes reported at the five
interchanges in Faribault County. In that ten year time span, there was 1 crash that resulted in at
least one fatality (K), 2 crashes where there was an incapacitating injury (A), 12 crashes where
there was at least one non-incapacitating injury, 18 crashes where there was an unknown or
possible injury, and 84 where there was property damage only as a result of the crash.
MnDOT has a crash rate factor which incorporates the total crashes, the approach volume
of traffic and the number of days into a formula and a severity rate range that places a higher
weight on a fatal crash and a low weight on a property damage crash. The highest crash rate
intersection and severity rate was the TH169 Interchange in Blue Earth with a rating of 0.96 and
1.53 respectively.
The highest crash cost calculated was also the I-90 / TH 169 (RP 119+00.914)
Interchange at Blue Earth. There were no fatal crashes at this location, but there were 2 type A
and 6 type B crashes with a cost of $199,020. Total calculated crash cost for the five
interchanges over the ten years was $407,560.
I-90 Interchange Study May 2013 25
Table 3.9: Fatal and Incapacitating crashes along the I-90 corridor in Faribault County
I-90 Crashes, Faribault Co 2003-2012 data Mile Marker Type K/ A # Fatal # Vehicles
Jct CSAH-1 113+00.272
Within 1 mile either direction 113+00.722 K 1 1
Between Interchanges 115+00.476 K 1 1
Between Interchanges 117+00.500 K 1 1
Jct USTH-169 119+00.909
Within 1 mile either direction 119+00.914 A 0 1
Within 1 mile either direction 119+00.690 A 0 1
Between Interchanges 120+00.166 A 0 1
Between Interchanges 120+00.488 A 0 1
Between Interchanges 121+00.168 A 0 1
Between Interchanges 124+00.877 K 1 1
Between Interchanges 127+00.980 K 1 1
Jct MNTH-254 128+00.538
Within 1 mile either direction 128+00.000 A 0 2
Between Interchanges 129+00.081 K 1 1
Between Interchanges 133+00.100 K 1 1
Jct MNTH-253 134+00.546
Within 1 mile either direction 134+00.385 A 0 1
Within 1 mile either direction 134+00.591 K 1 2
Jct MNTH-22 138+00.630
Between Interchanges 140+.00991 A 1 1
Between Interchanges 142+00.690 A 0 2
Jct MNTH-109 146+00.292
I-90 Interchange Study May 2013 26
FUTURE TRAFFIC VOLUMES AND OPERATIONS
4.1 Survey Results
An on-line survey was distributed to communities along the corridor (cities, counties,
EDA’s, Planning and Zoning offices, etc.). A copy of the survey can be found in Appendix A.
Below is a summary of the survey results.
4.1.1. Rock County
4.1.1.A Survey Results
Rock County anticipates commercial and business development and business expansion
(Papik Motors) along the I-90 corridor over the next five years in the Luverne area. There was a
recent development of a large feed mill west of Magnolia which utilizes the Magnolia
interchange. The community of Beaver Creek indicated that they do not anticipate development
in the near future. With the survey responses and known development, the current interchanges
meet the development needs.
4.1.1.B Safety Concerns
Rock County did not note any safety concerns in their survey responses.
4.1.2. Nobles County
4.1.2.A Survey Results
Nobles County anticipates development of
major traffic generators along the I-90 corridor over the
next five years. Worthington anticipates development
of major traffic generators that are commercial and
business development in the fields of agricultural related, research and development, and
tourism. There are lots available at the Worthington BioScience Park at the TH 59 and 60
Interchanges as well as the industrial park along TH 59 and the growing industrial and
I-90 Interchange Study May 2013 27
commercial route of TH 60. Worthington recently annexed land for future growth in the study
area. JBS, a large meat packing plant in Worthington, has indicated a potential expansion
(freezer warehouse), that will increase traffic generation (currently they generate about
500AADT, 75 HCAADT). The newly opened Worthington Event Center and Comfort Inn motel
are projected to increase traffic by 100 vehicles per day.
Brewster area will see expansion of an Ag-related business, the Minnesota Soy Producers
Soybean Plant within five years. The business will require a railroad expansion with the
development of a glycerin plant. The city of Rushmore does anticipate development over the
next five years; but they noted that they have commercial and business development and
warehousing distribution center and the current interchange meets their needs. TH 264 is
bordered by Nobles and Jackson counties and serves the city of Round Lake. Marketing is
currently being done to reopen or reuse a recently closed business in Round Lake, Farleys –
Sathers Candy company. At this time, the TH 264 interchange meets current and future needs.
4.1.2.B Safety Concerns
Nobles County identified a blind area when watching for on-coming traffic at east bound
ramps at TH 59. Lighting at the Rushmore exit was identified as an interchange need not being
met.
4.1.3. Jackson County
4.1.3.A Survey Results
Jackson County anticipates development along the I-90 corridor over the next five years
in the Jackson area. While not located along the I-90 corridor, the Heron Lake – New Vision
facility and the Heron Lake Bio Energy current expansion will likely have traffic impacts related
to I-90, the impacts as the result of the expansion are unknown.
Jackson is experiencing growth in several sectors which are generating additional traffic:
commercial/business development, agricultural related business, tourism, warehousing
I-90 Interchange Study May 2013 28
distribution center, housing development, and technology call center. The city of Jackson
anticipates an additional access to the Interstate will be needed along CSAH 34 south of the
airport at Jackson on Industrial Parkway and south of Industrial parkway for the heavy industrial
development located and expanding in Jackson.
4.1.3.B Safety Concerns
Several safety concerns at Jackson were identified in the survey at the TH 71 Interchange
area (TH 71 and Industrial Parkway and TH 71 and I-90). Specific concerns expressed included:
the volume of cross traffic at the Industrial Parkway and TH 71 and I-90 and TH 71 Intersections
and it was noted that the spacing of the I-90 on/off ramps was done prior to development. It is
anticipated that there will be a 20% increase in traffic in this area due to the AGCO (a large
Agricultural Equipment Manufacturer) expansion project. Additional development is currently
occurring (business, commercial and housing) at the Industrial Parkway and TH 71 area and will
generate more traffic. A suggested solution for the current and future increased traffic
generation at the TH 71 and Industrial parkway intersection, located just south of the I-90 on/off
ramps, is a traffic signal or round-a-bout.
4.1.4. Martin County
4.1.4.A Survey Results
Martin County anticipates development along the I-90 corridor over the next five years.
Development is most likely to occur at the intersection of Hwy 15/I-90 (City of Fairmont) and I-
90/Hwy 263 (City of Welcome). Development is likely to occur in the areas of “Commercial/
Business Development” (e.g. industrial park development or expansion), “Ag-related businesses”
(e.g. ethanol plant, grain elevator, bioscience), “Research/development institute”,
“Warehousing/Distribution Center”, and Housing Development. It is anticipated that the new
business will result in major traffic generators. All respondents felt that the current interchange
system was adequate to meet their future development needs.
4.1.4.B Safety Concerns
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There was a safety concern noted in the Martin County survey responses. Currently, at
the intersection of I-90 and Hwy 15, there are un-signalized intersections at the off ramps onto
TH 15. There is a safety concern with cross traffic at these un-signalized locations.
4.1.5. Faribault County
4.1.5.A Survey Results
Faribault County also anticipates development along the I-90 corridor over the next five
years. Development is most likely to occur at the intersection of Highway 169/I-90 in the City of
Blue Earth. It is anticipated that the development will be “Commercial/Business Development”
(e.g. industrial park development or expansion), “Ag-related businesses” (e.g. ethanol plant,
grain elevator, bioscience), and Housing Development. It is anticipated that the new
development will result in major traffic producers. However, all respondents felt that the current
interchange system was adequate to meet their needs. They also did not have any current safety
concerns along the corridor.
4.1.5.B Safety Concerns
Safety is also a concern pertaining to I-90 interchanges in southwest Minnesota. Fifty-
three percent of survey respondents feel that safety is a concern pertaining to the current
interchange system. Safety concerns range from blind areas and congestion around the
interchange to poor design and having to cross traffic which is dangerous for heavily loaded
trucks.
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SUMMARY
4.1 Overview
Interstate 90 (I-90) provides an important transportation route linking southwest
Minnesota to the rest of Minnesota, the Midwest, and the United States. This route is heavily
traveled both by car and truck traffic. I-90 is a major component of economic development in
south central and southwest Minnesota.
The top three types of developments along the I-90 corridor are commercial or business
development, Ag related business development, and housing development. Communities along
the corridor have the opportunity to expand due to increased demand from the high average daily
traffic volumes along I-90. According to
the I-90 Interchange Study Survey,
seventy eight percent of respondents
anticipate development along their stretch
of the I-90 corridor within the next 5
years. Fifty five percent of those
development projects will produce major
traffic generators onto I-90.
With a number of projects planned
for the next five years along the I-90 corridor in southwest Minnesota, additional access to I-90
may be needed in some areas. Of the thirty six total responses, seven indicated that there may be
a need for future interchange development along the corridor. Six of the responses were from
Jackson County and one was from Nobles County.
The primary goal of the study was to determine if the current interchange structure along
the I-90 corridor, within the study area, is adequate to meet current needs and to assess future
needs based upon potential growth demand.
I-90 Interchange Study May 2013 31
Three sets of criteria will be used in formulating this determination: crash data, existing
infrastructure, and future need based upon survey responses.
First, when looking at the crash data in Section 3.2 and 3.3 there appears to be a
consistent theme in the analysis of the crash rate, severity rate, and crash cost. Three
intersections continue to show up in the top five lists for each of the above three categories.
Topping the list in all three categories is the interchange at I-90 and TH 71 in Jackson County.
This intersection has the highest crash rate (1.19), severity rate (1.77) and crash cost ($252,580).
The interchange at I-90 and TH 15 in Fairmont is second in crash rate (1.05), fourth in severity
rate (1.41), and fifth in crash cost ($172,480), while the interchange at I-90 and TH 169 in Blue
Earth is fourth in crash rate (.96), second in severity rate (1.53), and third in crash cost
($199,020).
Secondly, when looking at the existing infrastructure there appears to be an even spacing
of interchanges and overpasses/bridges throughout the five county area. However, there does
appear to be a potential need in Jackson County, where the existing interchange spacing is
greater than that of the other counties. If an additional interchange were to be constructed in
Jackson County, it seems as though the existing overpass/bridge infrastructure would serve as a
good catalyst for a new interchange.
Finally, according to the community survey, the existing infrastructure appeared to meet
current needs, as well as anticipated future development needs in all counties, with the exception
of Jackson County. Jackson is experiencing growth in several sectors which are generating
additional traffic: commercial/business development, agricultural related business, tourism,
warehousing distribution center, housing development, and technology call center. The city of
Jackson anticipates an additional access to the Interstate will be needed along CSAH 34 south of
the airport at Jackson on Industrial Parkway and south of Industrial parkway for the heavy
industrial development located and expanding in Jackson.
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APPENDIX
5.1 Community Survey
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I-90 Interchange Study May 2013 34
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