Traffic-Transit Slides CP Presentation May 25 2010...

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

y ,

1

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


5. Alternatives

2

Overview of Other TransportationOverview of Other Transportation Projects in Ward 8

May 25th, 2010DHS Consolidation at St. ElizabethsWest Campus Transportation Elements 3

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


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


TRAFFIC & TRANSIT ISSUES


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


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)

7

N

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%


100% Total 100%

8

Traffic Analysis2016 Build Level of Service

LEGENDModerately Congested Intersection

Heavily Congested Intersection

Severely Congested Intersection


N

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


** Future retail along Pecan St. is shown according to District’s recommendations. It is not part of GSA/DHS project.

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


N

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


Firth Sterling Avenue


Firth Sterling Avenue / Access Road

N


Alternative 1: “T” intersection

14

Alternative 2: “Thru” intersection

N

Access Road


Access Road Previous Proposed design

(No Bus Parking

Gate 5North

(No Bus Parking Proposed) Bus Turn

Around

South Bus StopGate 4


p

SITE PLANN

Access Road Previous Proposed Design

45’23’20’

68’- 0”

20’

POND CLEARPOND CLEAR ZONE


BUS BAY SOUTH - PLAN

SOUTHTURN

SOUTHNORTHBUSN


Clear Zone

3’-5”

Pond

45’

11’ 11’11’12’

23’

20’ 20’3’

68’- 0”’


BUS BAY SOUTH - SECTION


33’21’

54’

33’21’20’

CLEAR ZONE


NORTH – PLAN ( No Buses)

SOUTHTURN SOUTHNORTHN


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’


NORTH SECTION ( No Buses)

Access Road Alternative 1 – Sawtooth bus stop

CemeteryCemetery

North Bus StopSouth Bus Stop

Gate 4

Gate 5

7 Bays3 Bays


7 Bays

SITE PLANN


47’25’ 6’ 47’25’ 6’20’

78’- 0”

(+ 10’ -0”)


BUS BAY SOUTHPrevious Proposed Condition


Previous Proposed Condition

BUS BAY SOUTH - PLAN

SOUTHTURN

SOUTHNORTHBUSN


POND CLEAR ZONE

47’

25’ 6’20’

78’-0”

31’- 0”

11’14’ 11’ 11’

78 0

( +10’-0”)


BUS BAY SOUTH - SECTION


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”


BUS BAY SOUTHComparative Analysis

Alternate 1 - Sawtooth 78’-0” ( +10’-0”)

31 0

Access Road Alternative 1 – Parallel bus stop

47’16’

63’- 0”

47’16’20’

(+ 9’ )

9’

( )


BUS BAY NORTH - PLAN

SOUTHTURN

SOUTHNORTHBUSN


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”


BUS BAY NORTH - SECTION

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’


63’- 0”

BUS BAY NORTHComparative Analysis

(+9’-0”)Alternate 1 – Parallel Bus Stop

47


C tCemetery

North Bus StopSouth Bus Stop

Gate 4

Gate 5

6 Bays4 Bays


6 Bays

SITE PLANN


47’31’ 473120’

78’- 0”

(+ 10’ )



SOUTHTURN

SOUTHNORTHBUS

BUS BAY SOUTHN

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”


BUS BAY SOUTHComparative Analysis

Alternate 1 – Parallel Bus Stop 78’-0” ( +10’)


47’16’

63’- 0”

47’16’20’

(+ 9’ )

9’

( )


BUS BAY NORTH - PLAN

SOUTHTURN

SOUTHNORTHBUSN

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’


63’- 0”

BUS BAY NORTHComparative Analysis

(+9’-0”)Alternate 2 – Parallel Bus Stop

47

Avoidance/Minimization Alternatives


•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)


( g )•Schedule to complete by 2016 not likely•Use of DDOT right-of-way not allowed for uses other than interstate facilities

34

Shepherd Parkway Avoidance / Minimization Alternativesat o te at es

Alternative A-2.B


Shepherd Parkway Avoidance / Minimization Alternatives

Alt ti A 2 B ti dAlternative A-2.B continued


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.


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


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


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


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


Point B

Interchange Alternatives


NorthAlternative 1

• Same movements as today to/from I-295


Same movements as today to/from I 295

• Flyover ramp of Malcolm X Avenue for NB direction from Interstate to Access Road

NorthAlternative 3

• Direct access to/from I-295 in all directions


Direct access to/from I 295 in all directions

• Flyover ramp of Malcolm X Avenue for NB direction from Interstate to Access Road

North Alternative 1 Impacts

12-18-09(I-2 Alt) Draft 1 Draft 2 Draft 3 DEIS

4.4

2.1


6.5

North Alternative 3 Impacts

12-18-09(I-2 Alt) Draft 1 Draft 2 Draft 3 DEIS

4.4

2.1


6.5

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


p

47

BACK-UP MATERIALS







Gate 651

5.89’-(3’)

20’-0”9’-0”5’-0” 1’-6” 56’-0”


Security Patrol path – Access RoadFebruary 19, 2010

LOD 35’-6”(-10’-0”)

52


Gate 453


Gate 454


Gate 455


Gate 456

Date post:	22-Aug-2020
Category:	Documents
Upload:	others
View:	0 times
Download:	0 times

Traffic-Transit Slides CP Presentation May 25 2010...

Documents