reston network analysis: 2030 results and roadway classifications
TRANSCRIPT
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County of Fairfax, Virginia
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Reston Network Analysis2030 Results & Roadway Classifications
March 13, 2017: Advisory Group MeetingMarch 17, 2017: Stakeholders Meeting
Kristin CalkinsFairfax County Department of Transportation
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County of Fairfax, Virginia
Agenda• Study Purpose• Project Progress Overview• 2050 Network & Results• Project Prioritization• 2030 Network & Results• Grid of Streets – Roadway Classifications• Next Steps• Questions and Answers2
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County of Fairfax, Virginia
Purpose of Study• Conduct a detailed analysis of the grid of streets
to determine:– Number of lanes between and at intersections– How to best serve pedestrians, bikes and transit– Right-of-way needs
• Assign urban street types and modal emphasis based on Department of Rail and Public Transportation Multimodal System Design Guidelines
• Conduct a phasing analysis to estimate when larger projects are needed
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Data Collection• Traffic
Counts in June 2015
• Travel Time Runs
Existing Conditions• Capacity
Analysis • Level of
Service
Test Grid of Streets (2030 & 2050)• Traffic
Forecasting Capacity Analysis
• Level of Service
Mitigation• Signal re-
timing• New links• Turn lanes• Additional
lanes
Roadway Classification• DRPT Design
Guidelines• Bike lanes• Sidewalks/
Pedestrian routes
• On-Street Parking
• Transit Routes
Finalize Grid of Streets (2030 & 2050) Based on:• Advisory
Group input• Stakeholder
input• Community
input
Phasing Analysis• Prioritizatio
n of larger projects
Network Analysis Project Process
Advisory Group input, Stakeholder input, Community input
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County of Fairfax, Virginia
Level of Service Standard
• LOS E (55 – 80 seconds of average delay for signalized intersections) is the standard for the Reston Transit Station Areas
• LOS F (greater than 80 seconds of average delay) is considered operationally failing
• Greater than 120 seconds of delay is set as a benchmark for problem locations in the Network Analysis
• These locations will likely need significant mitigation measures.
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County of Fairfax, Virginia
Mitigation Options• Mitigation Measures - Tiered Approach
– Tier 1: No right of way (ROW) impact – Tier 2: Some right of way impact– Tier 3: Large scale mitigations
• Each grid link is initially assumed to be one lane in each direction (with bike/ped facilities as specified in the Comprehensive Plan)
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County of Fairfax, Virginia
2050 Network & Results
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County of Fairfax, Virginia
2050 (Full Buildout) Network
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County of Fairfax, Virginia
Full Buildout Network
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• All grid links are one lane in each direction• Widening of Fairfax County Parkway to 6 lanes w/ HOV as
lanes 5 & 6 • South Lakes Overpass at Dulles Toll Road• Soapstone Overpass at Dulles Toll Road• Town Center Underpass at Dulles Toll Road• Interchange improvements on Fairfax County Parkway at
– Sunrise Valley Drive– Spring Street
• Extension of Pinecrest Road
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County of Fairfax, Virginia
Full Buildout Network (Cont.)
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• Widening of Fox Mill Road: Reston Parkway to Monroe Street• Widening of West Ox Road: Lawyers Road to Centreville
Road• Loop road through Reston Park & Ride: Reston Parkway to
Lawyers Road• Rock Hill Road Overpass at DTR• Extension of McLearen Road: West Ox Road to Reston
Parkway• Widening of Monroe Street from Fox Mill Road to Town of
Herndon• Reston Parkway Widening: South Lakes Drive to DTR
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County of Fairfax, Virginia
Full buildout Signals
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26 New SignalsSunrise Valley Dr. @ Wood Oak Dr. Sunrise Valley Dr. @ Commerce Park Dr. East
Sunrise Valley Dr. @ Colts Brook Dr. Soapstone Overpass @ Indian Ridge Rd. Extension
Frying Pan Rd. @ Greg Roy Ln. Sunset Hills Rd. @ West of Town Center Pkwy.
Monroe St. @ Future Connection to Herndon Metro Town Center Pkwy. @ North of Sunset Hills
Glade Dr. @ Pinecrest Rd. Town Center Pkwy. @ Market St.
South Lakes Dr. @ Pinecrest Rd. Sunset Hills Rd. @ Library St.
Sunrise Valley Dr. @ Pinecrest Rd. Extended Sunset Hills Rd. @ Soapstone Overpass
Sunrise Valley Dr. @ Town Center Pkwy. Sunset Hills Rd. @ East of Soapstone Overpass
Town Center Pkwy. @ North of Sunrise Valley Dr. Sunset Hills Rd. @ South Lakes Overpass
West of Reston Pkwy. with grid street Reston Station Blvd. @ Metro Center Dr.
Sunrise Valley Dr. @ Roland Clarke Place Reston Station Blvd. @ Michael Faraday Dr.
Sunrise Valley Dr. @ Indian Ridge Rd. Isaac Newton Square S. @ Isaac Newton Square W.
Sunrise Valley Dr. @ Commerce Park Dr. West Wiehle Ave. @ Isaac Newton Square N.
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County of Fairfax, Virginia
Full Buildout Network - Signals
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County of Fairfax, Virginia
Full Buildout 3rd Tier Problem Locations(After Tier 3 Mitigation)
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County of Fairfax, Virginia
Full Buildout Problem Locations
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Intersections – 120+ Seconds of Delay
Intersections2050
UnmitigatedAfter 2050
1st TierAfter 2050
2nd TierAfter 2050
3rd Tier20 10 7 1*
With Tier 3 mitigations a significant reduction in the projected number of intersections
experiencing delays in excess of 120 seconds can be seen.
*Centreville Road & Sunrise Valley Drive: PM 138 seconds in Innovation TSA.• The intersection was included in the analysis of the Innovation TSA.
There is ongoing evaluation of the improvements at this location.
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County of Fairfax, Virginia
Remaining LOS F IntersectionsOf the 42 key signalized intersections on the major roadways
in the Reston TSA, only 5 continue to have 80 seconds of delay or greater after Tier 3 Mitigation.
42 Key Intersections – LOS F
Peak Hour 2050 Unmitigated
After2050 1st Tier
After2050 2nd Tier
After2050 3rd Tier
Total 24 11 9 5
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County of Fairfax, Virginia
Tier 3 LOS F Intersections• Fairfax County Parkway at Baron Cameron Avenue
– 100 seconds of delay in the PM
• Reston Parkway at Sunrise Valley Drive – 92 seconds of delay in the PM
• Reston Parkway at South Lakes Drive – 95 seconds of delay in the AM
• Reston Parkway at Sunset Hills Road – 83 seconds of delay in the PM
• Centreville Road at Sunrise Valley Drive– Innovation TSA
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County of Fairfax, Virginia
Project Prioritization
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County of Fairfax, Virginia
Phasing Analysis
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• Conducted for Existing Conditions and Full Buildout– AM and PM peak hours
• Showed which projects had the greatest benefit in each scenario
• Showed hours saved during the peak hours• Informed how projects were prioritized
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County of Fairfax, Virginia
Phasing Analysis Results
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Improvements Description2016 Hours Saved
2050 Hours Saved
1 Grid of Streets Construct an enhanced grid of streets to increase connectivity 1,216 4,817
2 Town Center Town Center Parkway Underpass (4 lanes) from Town Center Parkway and Sunset Hills Road to Sunrise Valley Drive 374 1,322
3 FCP/HOV Widen Fairfax County Parkway: 6 lanes with HOV lane(s) 299 851
4 Soapstone Soapstone Overpass (3 lanes) across the DTR from Sunset Hills Road to Sunrise Valley Drive 300 600
5 Sunset Hills Widen Sunset Hills Road: 6 lanes from Wiehle Ave to Fairfax County Pkwy, and 4 lanes from Wiehle Ave to Hunter Mill Road 257 478
6 Fox Mill Widen Fox Mill Road: 4 lanes from Reston Parkway to Monroe Street 0 714
7 South Lakes South Lakes Overpass (4 lanes ) across the DTR from Sunset Hills Road to Sunrise Valley Drive 240 462
8 FCP/SRV Grade-separated interchange at Fairfax County Parkway and Sunrise Valley Drive 184 514
9 Reston Pkwy Widen Reston Parkway: 6 lanes from South Lakes Drive to the DTR 82 313
10 West Ox Widen West Ox Road: 4 lanes from Lawyers Road to Centreville Road -28 253
11 Monroe Widen Monroe Street: 4 lanes from West Ox Road to Town of Herndon 27 154
12 Pinecrest Extend Pinecrest Road from South Lakes Drive to Sunrise Valley Drive 2 118
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County of Fairfax, Virginia
Project Prioritization
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Priority 11. Soapstone Overpass2. Town Center Underpass3. Reston Parkway Widening4. Fairfax County Parkway Widening/HOV (from West Ox to the Dulles Toll
Road) Priority 25. Sunrise Valley Drive/Fairfax County Parkway Interchange6. South Lakes Overpass7. Fox Mill Widening Priority 38. West Ox Road Widening9. Monroe Street Widening10.Pinecrest extension
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County of Fairfax, Virginia
2030 Network & Results
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County of Fairfax, Virginia
Mid Buildout Scenario
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• 2030 is a representation of the ‘mid buildout’ of the Reston TSAs
• Assumptions about development levels and improvements were made by the Department of Planning and Zoning (DPZ)
• Helps staff understand where improvements may be needed to support a midpoint in development
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County of Fairfax, Virginia
Bid Buildout Improvements
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• Roadways:– Soapstone Connector– Town Center Parkway Underpass – Reston Parkway – 6 lanes from EB DTR to South
Lakes Drive• Intersection Modifications:
– Reston Parkway & Sunrise Valley Drive– Reston Parkway & South Lakes Drive– Reston Parkway & Baron Cameron Avenue
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County of Fairfax, Virginia
Mid Buildout Improvements (Cont.)
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• New Signals– Town Center Parkway north of Sunset Hills Road– New Dominion Parkway and Explorer Street– Soapstone Connector and Sunset Hills Road– Reston Station Boulevard Extended and Sunset
Hills Road– Sunrise Valley Drive and Town Center Parkway
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County of Fairfax, Virginia
Mid Buildout Grid
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County of Fairfax, Virginia
Tier 3 LOS F Intersections
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• Fairfax County Parkway at Sunrise Valley Drive – 132 seconds of delay in the AM, ok in PM
• Sunset Hills Road at Town Center Parkway– 123 seconds of delay in the AM, ok in PM
• Reston Parkway at South Lakes Drive– 143 seconds of delay in the AM, ok in PM
• Sunrise Valley Drive at Hunter Mill Road– 121 seconds of delay in the AM, ok in PM
• Sunset Hills Road at Hunter Mill Road– 87 seconds of delay in the AM, ok in the PM
• Sunrise Valley Drive at Preston White Drive/South Lakes Drive– 113 seconds of delay in the PM, ok in the AM
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County of Fairfax, Virginia
Mid Buildout LOS F Intersections
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County of Fairfax, Virginia
Mid Buildout LOS F IntersectionsFairfax County Parkway at Sunrise Valley Drive
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2030 2050
Same geometry as existing conditions. Single Point Urban Interchange and 6 lane widening of Fairfax County Parkway
Sunrise Valley Dr.Sunrise Valley Dr.
Fairf
ax C
ount
y Pa
rkwa
y
Fairf
ax C
ount
y Pa
rkwa
y
AM: 132 sec.PM: 64 sec.
AM: 64 sec.PM: 53 sec.
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County of Fairfax, Virginia
Mid Buildout LOS F IntersectionsTown Center Parkway and Sunset Hills Road
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2030 2050
Sunset Hills Road 4 lanes. Sunset Hills Road 6 lanes.
Sunset Hills Road
Tow
n C
ente
r P
arkw
ay
AM: 123 sec.PM: 76 sec.
AM: 67 sec.PM: 61 sec.
Sunset Hills Road
Tow
n C
ente
r P
arkw
ay
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County of Fairfax, Virginia
Mid Buildout LOS F IntersectionsReston Parkway at South Lakes Drive
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2030 2050
South Lakes Drive
Rest
on
Park
way
AM: 143 sec.PM: 71 sec.
AM: 95 sec.PM: 71 sec.
South Lakes Drive
Res
ton
Park
way
No Fox Mill Widening or Pinecrest Road Extension
Includes Fox Mill Widening or Pinecrest Road Extension
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County of Fairfax, Virginia
Mid Buildout LOS F IntersectionsSunrise Valley Drive at Hunter Mill Road
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2030 2050
Sunrise ValleyDrive
Hun
ter M
ill R
oad
AM: 121 sec.PM: 60 sec.
AM: 39 sec.PM: 33 sec.
No South Lakes CrossingH
unte
r Mill
Roa
d
Sunrise ValleyDrive
Includes South Lakes Crossing
*The Hunter Mill Road Study has Recommendations influencing this intersection
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County of Fairfax, Virginia
Mid Buildout LOS F IntersectionsSunset Hills Road at Hunter Mill Road
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2030 2050
Sunset Hills Road
Hun
ter M
ill R
oad
AM: 87 sec.PM: 64 sec.
AM: 71 sec.PM: 34 sec.
No South Lakes Crossing
Hun
ter M
ill R
oad
Sunset Hills Road
Includes South Lakes Crossing
*The Hunter Mill Road Study has Recommendations influencing this intersection
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County of Fairfax, Virginia
Mid Buildout LOS F IntersectionsSunrise Valley Drive at South Lakes Drive
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2030 2050S
outh
Lak
es
Driv
e
AM: 72 sec.PM: 113 sec.
AM: 64 sec.PM: 78 sec.
Sunrise Valley Drive
No South Lakes CrossingS
outh
Lak
es
Driv
e
Sunrise ValleyDrive
Includes South Lakes Crossing
To South Lakes Crossing
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County of Fairfax, Virginia
Mid Buildout Scenario Summary
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• Only seven intersection have issues• Improvements in place by 2050 will result in
acceptable operations• County staff will continue to assess
transportation and development in Reston and will modify recommendations as necessary
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County of Fairfax, Virginia
Urban Street Standards
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County of Fairfax, Virginia
Reston TSAs Full Buildout # of Lanes
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County of Fairfax, Virginia
Reston TSAs Full Buildout Bike Network
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County of Fairfax, Virginia
Wiehle TSA – Roadway Classifications
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County of Fairfax, Virginia
Reston Town Center TSA – Roadway Classifications
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County of Fairfax, Virginia
Herndon TSA – Roadway Classifications
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County of Fairfax, Virginia
Next Steps• Community Meeting April (TBD)• Public Comment• Documentation• Final Report Summer 2017
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County of Fairfax, Virginia
Schedule
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Task Description
1A Land Use and Networks - Task is Complete
1B Traffic Counts - Task is Complete
2A Establish Existing Conditions - Task is Complete
2B Calibrate Against Existing Conditions - Task is Complete
3A2 Analyze Future Conditions (2050) - Task complete advance to Tier 3 Mitigation
3A1 Analyze Future Conditions (2030)
3B Simulation of the Dulles Toll Road
4A Meetings/Presentations
5A Phasing Analysis - Existing Conditions- Ths Task is complete
5B Phasing Analysis - 2050 - Optional
6 Determination of DRPT Guidelines Roadway Classification
7 Documentation
8 Reston Parkway Capacity Improvements
9 Fairfax County Parkway & Spring Street Interchange
10 Fairfax County Parkway & Sunrise Valley Drive
11 Rock Hill Bridge at Sunrise Valley Drive
12A Meetings/Presentations
07
3/17
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County of Fairfax, Virginia
Questions & Comments
For questions and comments about the study please contact:
Kristin Calkins: [email protected](703) 877-5710
http://www.fairfaxcounty.gov/fcdot/restonnetworkanalysis/
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