Reston Network Analysis Community Meeting 2050 Results and Funding Plan: Nov. 7, 2016
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Transcript of Reston Network Analysis Community Meeting 2050 Results and Funding Plan: Nov. 7, 2016
County of Fairfax, Virginia
Reston Network AnalysisCommunity Meeting
2050 Results & Funding Plan
November 7, 2016
Kristin CalkinsFairfax County Department of Transportation
County of Fairfax, Virginia
Agenda• Purpose of the Study• Network Analysis Process• 2050 Results• Next Steps• Question & Answer
Department of Transportation 2
County of Fairfax, Virginia
Purpose of Study• Conduct a detailed analysis of the grid of streets and
determine– A finalized grid of streets– Number of lanes between and at intersections– How to best accommodate transit, bikes, and pedestrians– Right-of-way needs
• Assign urban street types and modal emphasis based on the Urban Street Standards from the Department of Rail and Public Transportation
• Conduct a phasing analysis of when larger projects are needed
Department of Transportation 3
County of Fairfax, Virginia
How we got here:Reston Phase I Plan Amendment
Department of Transportation 5
County of Fairfax, Virginia
Need for Study
Department of Transportation 6
The Reston Master Plan Special Study was a two-phase planning study to identify changes to the Fairfax County Comprehensive Plan to help guide future development in the planned community of Reston and adjoining areas located along the Dulles Airport Access and Toll Road.
• The study began in 2009 and concluded in June 2015 after robust and thoughtful community discussions and participation.
• The task force was comprised of 25 primary members that included residents and representatives from Reston communities, developments, and County staff.
• The Board follow-on motion from the adoption directed staff to: – “conduct a detailed evaluation and operational analysis of the enhanced street
network shown on the Reston Master Plan, prioritize these improvements, and develop an implementation strategy.”
County of Fairfax, Virginia
Need for Study (Cont.)Follow-on Study to the Reston Phase I Plan Amendment
Department of Transportation 7
County of Fairfax, Virginia
Reston Phase I Plan AmendmentTransportation Recommendations
Department of Transportation 8
• Maintain a balance between land use and transportation• Ensure pedestrian mobility throughout the TSAs• Bike Master Plan for County has been adopted and
includes the TSAs• An enhanced RIBS and Fairfax Connector service to
support rail• Strong Transportation Demand Management (TDM)
program in the TSAs
County of Fairfax, Virginia
Reston Phase I Plan AmendmentMajor Road Transportation Recommendations
Department of Transportation 9
• An enhanced street network to increase connectivity– Developed by the Reston Task
Force• Soapstone Drive Overpass• Town Center Parkway
Underpass • South Lakes Drive Overpass• Grade Separate Fairfax
County Parkway/Sunrise Valley Drive
County of Fairfax, Virginia
Department of Transportation 10
Reston Phase I Plan AmendmentGrid of Streets
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
County of Fairfax, Virginia
Transit Oriented Development• Mixed-use walkable
development around Metrorail stations
• Supported by strong Transportation Demand Management (TDM) program• Enhanced pedestrian facilities• Increased transit ridership• More bike parking and access• Encourages carpooling• Teleworking
Department of Transportation 13
Development2050 Peak Hour – Future Trips0 to ¼ Mile
¼ to ½ Mile
Beyond ½ Mile
Office 45% 40% 35%
Residential 45% 40% 25%Technological Advancement
7.5% 7.5% 7.5%
TDM Vehicle Trip Reduction Goals
Reductions are from ITE Trip Generation Rates
County of Fairfax, Virginia
Evaluating the Grid• Level of Service and Delay at Intersections
• LOS E (55 – 80 seconds of delay) or better is the standard for the Reston Transit Station Areas agreed to by VDOT and FCDOT
• Queue Length (number of cars waiting at a signal)• Walksheds – pedestrian accessibility• Enhanced connectivity for transit
Department of Transportation 14
County of Fairfax, Virginia
Achieving LOS E: Mitigation• Mitigation reduces vehicle congestion • Mitigation reduces delays experienced at
intersections• Mitigation improves the reliability of travel times
through an area (for both buses and vehicles)• Mitigation will be the way to achieve LOS E or better
in the Transit Station Areas• Using mitigation measures that have the lowest
impact
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County of Fairfax, Virginia
Mitigation Options• Mitigation Measures - Tiered Approach
– 1st Tier: No right of way (ROW) impact – 2nd Tier: Limited right of way impact– 3rd Tier: Large scale mitigations if needed
– Consultation with Advisory Group, Stakeholders, and citizens on all Tier 3 measures
• Each grid link is initially assumed to be one lane in each direction
– No turn lanes were initially assumed at new intersections
Department of Transportation 17
Additional coordination will be needed with VDOT on the location of turn lanes at signalized intersections
Reston Station Boulevard
N/S
Grid
Lin
k
County of Fairfax, Virginia
2050 Mitigation Measures• Tier 1 (no ROW impacts)
– Modifications to lane configurations– Signal timing and phasing optimization – All-way stop vs. two-way stop evaluation – Additional traffic signals
• Tier 2 (limited ROW impacts– Turn lanes: left and right turn lanes– Additional through lane(s)– Additional grid link(s)
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County of Fairfax, Virginia
Problem Locations
Department of Transportation 20
• Problem Locations were identified to help track the progress of mitigation measures
• 120 seconds of delay was used to identify a problem location
– LOS E is 80 seconds and 120 seconds represents 50% more delay than what is acceptable in the Reston TSAs.
• Problem locations help staff understand where more effort would be needed to mitigate the transportation issues.
County of Fairfax, Virginia
2050 Problem Locations
Department of Transportation 22
Intersections – 120+ Seconds of Delay
Intersections2050 Unmitigated After 2050
1st TierAfter 2050
2nd Tier20 10 7
With signal re-timings, new signals, and new turn lanes there was a reduction in the
projected number of intersections with delays in excess of 120 seconds
After Tier 2: 7 Problem Locations 1 was in the Innovation TSA, which has already been finalized, 6 were associated with identified follow-on tasks
• Fairfax County Parkway & Spring Street• Fairfax County Parkway & Sunrise Valley Drive• Reston Parkway: From Lawyers Road to Baron Cameron Avenue
County of Fairfax, Virginia
Network Analysis Follow-On Tasks
Fairfax County Pkwy. & Spring St.
Reston Pkwy. Capacity Improvements
Fairfax County Pkwy. & Sunrise Valley Dr.
23
Graphic from Reston Network Analysis Scope
County of Fairfax, Virginia
Tier 3 Alternatives Analysis• Proposed options for Tier 3 mitigation were coordinated
and developed with the Advisory Group and Stakeholders Group for:– Reston Parkway– Fairfax County Parkway & Spring Street/Sunset Hills Road– Fairfax County Parkway & Sunrise Valley Drive
• Options were tested and evaluated based on LOS, cost, ROW need and context
• The 2050 Tier 3 model incorporated the recommended improvements for each of the follow-on tasks
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County of Fairfax, Virginia
Reston Parkway: Proposed Lawyers Road Connection
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Remove Left Turn Bays
New Intersection
xx
Realigned Road
County of Fairfax, Virginia
Fairfax County Parkway: Proposed Fairbrook Drive Ramp
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County of Fairfax, Virginia
Fairfax County ParkwayProposed Single Point Urban Interchange
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Baron Cameron & Fairfax County Parkway
County of Fairfax, Virginia
2050 Problem Locations
Department of Transportation 33
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 loation.
County of Fairfax, Virginia
Tier 3 LOS F Intersections• Problem Locations were identified to help track
the progress of mitigation measures• LOS E (55 – 80 seconds of delay) or better is the
standard for the Reston Transit Station Areas agreed to by VDOT and FCDOT
• Goal of study is to have no intersections operating at LOS F
• Key intersections, where major roads intersect, were used to identify LOS F intersections
34
County of Fairfax, Virginia
Tier 3 LOS ResultsOf 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
35
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 in 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
Next Steps• 2050 Phasing Analysis of major projects• 2050 detailed analysis of the Dulles Toll Road• 2030 interim analysis of network• Classification of grid links using DRPT Urban Street
Guidelines
Department of Transportation 37
County of Fairfax, Virginia
Schedule
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Task Description 2015 May 15 June 15 July 15 Aug 15 Sep 15 Oct 15 Nov 15 Dec 15 Jan 16 Feb 16 Mar 16 April 16 May 16 June 16 July 16 Aug 16 Sep 15 Oct 15 Nov 16 Dec 16 Jan 17
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
11/7/16
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/
Department of Transportation 39