Traffic-Transit Slides CP Presentation May 25 2010...
Transcript of Traffic-Transit Slides CP Presentation May 25 2010...
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DHS Consolidation at St. Elizabeths West Campus Transportation Elements
Transportation AnalysisConsulting Parties MeetingMay 25th, 2010
May 25th, 2010DHS Consolidation at St. ElizabethsWest Campus Transportation Elements
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Agenda – West Campus TransportationAgenda West Campus Transportation Elements
1. Overview of Other Transportation Projects in Ward 8
2. Summary of Changes from last version presented to Consulting Parties
3. Traffic Analysis
4. Avoidance Alternatives
5 Alternatives
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5. Alternatives
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Overview of Other TransportationOverview of Other Transportation Projects in Ward 8
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Overview of Other Transportation Projects in p jWard 8Projects Currently in Development• 11th Street Bridges• South Capitol Street Corridor• South Capitol Street Trail• South Capitol Street Trail• Streetcar System• Martin Luther King Great Street Improvements
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Summary of Items that have Changed from West C EISCampus EIS
•TPB/MWCOG model update
•Changes to Land Use in the area including Bolling Air Force Base
• TPB/MWCOG Travel Demand Forecast Model• Most recent land use and transportation network versions• Refined network within study area• Refined network within study area
• Background Conditions• Anacostia Naval Station / Bolling Air Force Base
fi ti d l dreconfiguration and land use • Full integration of South Capitol Street and 11th Street projects• East Campus Development (DCOP / DMPED)
• Revised Transportation Demand Management• Strategies included in detailed analysis
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TRAFFIC & TRANSIT ISSUES
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9%
15%
5%
8%
20%
29%29%29%29%
5%
4% 22%22%22%22%
15%
18%
29%29%29%29%2020%%2020%%
9%
9%
St. Elizabeth East & West CampusN
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13%
10%
Vehicular Distribution
Date: 21 May, 2010
(Distribution does not include Transit & DHS Shuttle Trips)(Graphical Results are based on 2030 Alt-A TDFM Runs)
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DHS Campus Mode Split
Home (Mode of Departure) Destination - St.E's (Mode of Arrival)
M d P t /S lite Percentage/Split Mode Percentage/Split
18% SOV (SOV and Carpool Non-DHS) 21%
DHS 3% Carpool/Vanpool 12%
12% Dropped Off 2%12% Dropped Off 2%
pped Off 2%
xpress Bus 4% Commuter/Express Bus 4%
35% Shuttle 30%
7% Metro-Bus 6%
2%
1% Walk 9%
1% Bicycle 1%
0% Motorcycle 0%
5% Work from Home 5%
2% Didn't Work 2%
k Centers 4% Proposed Telework Center 4%
de 4% Agency Park & Ride 4%
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100% Total 100%
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Traffic Analysis2016 Build Level of Service
LEGENDModerately Congested Intersection
Heavily Congested Intersection
Severely Congested Intersection
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DHS Campus Employee Access Points
North
100
staf
f10
0 st
affNorth
LEGEND
3131Signalized Intersection
Unsignalized Intersection
DHS Campus Entry Points
4150 staff4150 staff485 staff485 staff
Points
DHS East-West Campus Transfer Point
DHS P d C tiDHS Ped Connections
3900 staff3900 staff
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** Future retail along Pecan St. is shown according to District’s recommendations. It is not part of GSA/DHS project.
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Proposed Shuttle AccessLEGENDCongress Heights Station – Pecan St
C H i ht
1
Congress Heights Station – Gate 4
Anacostia Station –Gate 4
Anacostia – Gate 1 1
ecan
St
ate
ecan
St
ate
e 2
e 2
Anacostia – Gate 1 METRO BUS
METRO BUS StopMM
METRO BUSMETRO BUS
DH
DHMM MM
Pe Ga
Pe Ga
Gat
eG
ate
11 HS SH
UTTLE
HS SH
UTTLE
Gat
e 1
Gat
e 1
Gate 4Gate 43 2
EE
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Proposed Shuttle Access
Shuttle Trip Calculations
lPassengers
Shuttle Trips(40 person)
ShuttlesTravel Time(min)
Wait Time (min)
1) Congress Heights to Pecan Street1000 25 9 20 2.5
2) Congress Heights to Gate 4300 8 4 30 7.5
3) Anacostia to Gate 4800 20 10 30 3 0800 20 10 30 3.0
TOTAL2100 53 23
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Firth Sterling Avenue
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Firth Sterling Avenue / Access Road
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Alternative 1: “T” intersection
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Alternative 2: “Thru” intersection
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Access Road
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Access Road Previous Proposed design
(No Bus Parking
Gate 5North
(No Bus Parking Proposed) Bus Turn
Around
South Bus StopGate 4
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p
SITE PLANN
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Access Road Previous Proposed Design
45’23’20’
68’- 0”
20’
POND CLEARPOND CLEAR ZONE
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BUS BAY SOUTH - PLAN
SOUTHTURN
SOUTHNORTHBUSN
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Access Road Previous Proposed Design
Clear Zone
3’-5”
Pond
45’
11’ 11’11’12’
23’
20’ 20’3’
68’- 0”’
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BUS BAY SOUTH - SECTION
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Access Road Previous Proposed Design
33’21’
54’
33’21’20’
CLEAR ZONE
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NORTH – PLAN ( No Buses)
SOUTHTURN SOUTHNORTHN
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Access Road Previous Proposed Design
P t l
Clear Zone7’ 6”
Patrol Path41’6 TW
11’ 11’11’
Zone3’-6”
7’-6”
32 BW34 BW
33’21’9’
54’- 0”
20’
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NORTH SECTION ( No Buses)
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Access Road Alternative 1 – Sawtooth bus stop
CemeteryCemetery
North Bus StopSouth Bus Stop
Gate 4
Gate 5
7 Bays3 Bays
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7 Bays
SITE PLANN
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Access Road Alternative 1 – Sawtooth bus stop
47’25’ 6’ 47’25’ 6’20’
78’- 0”
(+ 10’ -0”)
POND CLEARPOND CLEAR ZONE
BUS BAY SOUTHPrevious Proposed Condition
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Previous Proposed Condition
BUS BAY SOUTH - PLAN
SOUTHTURN
SOUTHNORTHBUSN
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Access Road Alternative 1 – Sawtooth bus stop
POND CLEAR ZONE
47’
25’ 6’20’
78’-0”
31’- 0”
11’14’ 11’ 11’
78 0
( +10’-0”)
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BUS BAY SOUTH - SECTION
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Access Road Alternative 1 – Sawtooth bus stop
Clear Z
12’-0”
Zone
20’-0”
Previous Proposed Design68’-0”
20’-0” 45’-0”3’-0”
Clear ZoneZone
20’-0”47’-0”
14’-0”
31’-0”
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BUS BAY SOUTHComparative Analysis
Alternate 1 - Sawtooth 78’-0” ( +10’-0”)
31 0
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Access Road Alternative 1 – Parallel bus stop
47’16’
63’- 0”
47’16’20’
(+ 9’ )
9’
( )
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BUS BAY NORTH - PLAN
SOUTHTURN
SOUTHNORTHBUSN
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Access Road Alternative 1 – Parallel bus stop
Patrol
Clear Zone
Patrol Path
7’-0”8’-0”
42 TW
11’ 11’11’9’
Zone
20’ 14’16’
3’-6”32 BW
34 BW
47’16’
63’- 0”
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BUS BAY NORTH - SECTION
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Access Road Alternate 1 - Parallel Bus Stop
Clear 7’ 6”
Patrol Path41’6 TW
9’
Zone3’-6”
20’
7’-6”
32 BW34 BW
9
54’- 0”
0
Patrol P th
54’- 0”Previous Proposed Design
21’ 33’
Clear Zone
Path
3’ 6”
7’-0”
Clear Zone8’-0”
42 TW
9’ 20’
3’-6”32 BW34 BW
16’ 47’
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63’- 0”
BUS BAY NORTHComparative Analysis
(+9’-0”)Alternate 1 – Parallel Bus Stop
47
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Access Road Alternative 2 – Parallel bus stop
C tCemetery
North Bus StopSouth Bus Stop
Gate 4
Gate 5
6 Bays4 Bays
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6 Bays
SITE PLANN
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Access Road Alternative 2 – Parallel bus stop
47’31’ 473120’
78’- 0”
(+ 10’ )
POND CLEARPOND CLEAR ZONE
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SOUTHTURN
SOUTHNORTHBUS
BUS BAY SOUTHN
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Access Road Alternative 2 – Parallel Bus Stop
Clear
3’-5”
Clear Zone
20’-0” 12’-0”
Previous Proposed Design68’-0”
45’-0”20’-0”3’-0”
Clear Zone
3’-5”
20’-0”
47’-0”31’-0”
14’-0”
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BUS BAY SOUTHComparative Analysis
Alternate 1 – Parallel Bus Stop 78’-0” ( +10’)
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Access Road Alternative 2 – Parallel bus stop
47’16’
63’- 0”
47’16’20’
(+ 9’ )
9’
( )
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BUS BAY NORTH - PLAN
SOUTHTURN
SOUTHNORTHBUSN
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Access Road Alternate 2 - Parallel Bus Stop
Clear 7’ 6”
Patrol Path
41’6 TW
9’
Zone3’-6”
20’
7’-6”
32 BW34 BW
9
54’- 0”
0
Patrol P th
54’- 0”Previous Proposed Design
33’21’
Clear Zone
Path
3’ 6”
7’-0”
Clear Zone8’-0”
42’TW
9’ 20’
3’-6”32’ BW
34’ BW
16’ 47’
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63’- 0”
BUS BAY NORTHComparative Analysis
(+9’-0”)Alternate 2 – Parallel Bus Stop
47
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Avoidance/Minimization Alternatives
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•Avoidance Alternative – A2B•Original 4(f)
Avoidance/Minimization Alternatives
•Original 4(f) •Safety issues along I-295 with weave issues at Malcolm X/I-295 and south•Volumes at Firth Sterling/Access Road results in deficient LOS
•Avoidance Alternative – Direct Access•Direct ramps to and from I-295 at West Campus Gate 4
•Violation of AASHTO Design Standards/DDOT Design Standards•FHWA/DDOT Policy Issues
• Minimization Alternative – Alt. 4 Re-alignment of I-295 – Requested by NPS 5-14-2010Minimization Alternative Alt. 4 Re alignment of I 295 Requested by NPS 5 14 2010•Access Roadway and I-295 realigned and move east
•Eliminates future abilities to expand I-295 capacity in the future•Construction/Maintenance operations would impact NPS property•Schedule to complete by 2016 not likelySchedule to complete by 2016 not likely
• Minimization Alternative – Alt. 2 Revised (4-13-2010)•One-way couplet between South Capitol Street and Access Road
•DHS/DDOT Programmatic Issues with heightened securityG t i i•Geometric issues
• Minimization Alternative – Requested by NPS (4-13-2010)•Swap South Capitol Street and I-295
•Geometric issues (Bolling AFB/Anacostia Naval Station, SCS/Suitland, etc)
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( g )•Schedule to complete by 2016 not likely•Use of DDOT right-of-way not allowed for uses other than interstate facilities
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Shepherd Parkway Avoidance / Minimization Alternativesat o te at es
Alternative A-2.B
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Shepherd Parkway Avoidance / Minimization Alternatives
Alt ti A 2 B ti dAlternative A-2.B continued
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Avoidance/Minimization AlternativesDirect Access
Features• Direct ramps to and from Interstate 295 at West Campus Gate 4• Attempts to remove/reduce impacts to park land
Issues• Violation of AASHTO Design Standards & DDOT Design Requirements• FHWA Policy / DDOT Policy Issues• Alignment of I‐295 direct ramps constrained by lateral clearance• Significant aerial structures required:Significant aerial structures required:
• view‐shed issues• major order‐of‐magnitude costs• constructability challenges
• Introduces problems safety, traffic operations due to ramp spacing
SummaryDirect Access Alternative will not satisfy Design Standards, Federal/local Policy requirements and has several similar issues to other avoidance alternatives.
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Avoidance/Minimization AlternativesAlternative 4 – Re-alignment of I-295
F tFeatures• Access Roadway
and I-295 realigned and moved east
• Attempts to remove impacts to park landimpacts to park land
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Within parkland Within parkland
Avoidance/Minimization AlternativesAlternative 4 – Re-alignment of I-295 - continued
10’ trail in park land(See Point B)
Realignment into park land
Realignment into park land
(See Point A) (See Point C)NB I-295 off-bound ramp
adjacent to park land (See Point D) – could be
maintenance issue
Begin SB I-295 realignment south
Begin NB I-295 realignment south Point A
Begin NB I-295 realignment north
Begin SB I-295 realignment north
SummaryAvoidance Alternative does not remove impacts to park land and does not meet safety and operations requirements. Due to scheduling issues, inability for DDOT to improve I-295 in the future, nor provide for maintenance of I 295 corridor and order ofnor provide for maintenance of I-295 corridor, and order-of-magnitude costs, to constructability issues this alternative does NOT meet the Purpose and Need.
P i BPoint C Point DPoint BPoint C Point D
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Avoidance/Minimization AlternativesAlternative 2 Revised
Point A (see below)
Features• One way couplet between South Capitol Street and Access Road
Modification shown on next slidePoint A
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Avoidance/Minimization AlternativesAlternative 2 Revised - continued
Point A (see below)
Point B (see below)
Features• Parallel roadway from Gate 4 to Gate 6Parallel roadway from Gate 4 to Gate 6• Minimized road profile
Summary:Alternative 2 Revised (one-way couplet) north of Gate 4 does not meet safety or operation requirements. It cannot provide uninterrupted NB safety or operation requirements. It cannot provide uninterrupted NB traffic in parallel facility. Point A
May 25th, 2010DHS Consolidation at St. ElizabethsWest Campus Transportation Elements 41
Point B
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Interchange Alternatives
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NorthAlternative 1
• Same movements as today to/from I-295
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Same movements as today to/from I 295
• Flyover ramp of Malcolm X Avenue for NB direction from Interstate to Access Road
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NorthAlternative 3
• Direct access to/from I-295 in all directions
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Direct access to/from I 295 in all directions
• Flyover ramp of Malcolm X Avenue for NB direction from Interstate to Access Road
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North Alternative 1 Impacts
12-18-09(I-2 Alt) Draft 1 Draft 2 Draft 3 DEIS
4.4
2.1
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6.5
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North Alternative 3 Impacts
12-18-09(I-2 Alt) Draft 1 Draft 2 Draft 3 DEIS
4.4
2.1
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6.5
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Next Steps
C t i f th li i D ft EIS June 24
Courtesy copies of the preliminary Draft EIS sent to consulting parties as well as review copies to cooperating agencies
Comments due from cooperating agencies July 7 Comments due from cooperating agencies and consulting parties
July 29 Start of 45-day public comment period for h f SJuly 29 the Draft EIS
September Public hearing and end of public comment period
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p
47
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BACK-UP MATERIALS
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Access Road Alternative 1 – Parallel bus stop
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Access Road Alternative 2 – Sawtooth bus stop
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May 25th, 2010DHS Consolidation at St. ElizabethsWest Campus Transportation Elements
Gate 651
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5.89’-(3’)
20’-0”9’-0”5’-0” 1’-6” 56’-0”
May 25th, 2010DHS Consolidation at St. ElizabethsWest Campus Transportation Elements
Security Patrol path – Access RoadFebruary 19, 2010
LOD 35’-6”(-10’-0”)
52
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May 25th, 2010DHS Consolidation at St. ElizabethsWest Campus Transportation Elements
Gate 453
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May 25th, 2010DHS Consolidation at St. ElizabethsWest Campus Transportation Elements
Gate 454
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May 25th, 2010DHS Consolidation at St. ElizabethsWest Campus Transportation Elements
Gate 455
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May 25th, 2010DHS Consolidation at St. ElizabethsWest Campus Transportation Elements
Gate 456