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Shirley Gate Road Extended Corridor Planning Study

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Shirley Gate Road Extended Corridor Planning Study

Public Information Meeting

Dec. 7, 2015

Published in: News & Politics
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Shirley Gate Road Extended Corridor Planning Study

  1. 1. County of Fairfax, Virginia Department of Transportation Shirley Gate Road Extended Corridor Planning Study Public Information Meeting 12/07/2015
  2. 2. County of Fairfax, Virginia Agenda • Introductions • Project Purpose and Need • Existing Conditions Overview • Screening of Alternatives • Traffic Forecasting • Alignment and Interchange Concept Development: Preferred Alignment • Benefits • Mitigation Considerations • Next Steps • Questions/Comments Department of Transportation 2 Shirley Gate Road Extended Corridor Planning Study
  3. 3. County of Fairfax, Virginia Department of Transportation 3 Project Purpose and Need • The Shirley Gate Road Extension was added to the Transportation Map in the Fairfax County Comprehensive Plan in July 1991. It is in Area III, Pohick Planning District and the Twin Lakes Community Planning Sector (P1). The plan text specifies: – Extend Shirley Gate Road southward to connect with the Fairfax County Parkway. Shirley Gate Road Extended should be designed to utilize the existing easements to the extent possible to minimize the impact on the five acre lots and the existing homes on Meath Court. • There is a need to relieve congestion on Fairfax County Parkway by replacing the Popes Head Road intersection with an interchange. • Need to provide access to Patriot Park East, avoiding entrance off Braddock Road through an established neighborhood and existing wetland area. Current plan calls for 2 interchanges. This project will identify the preferred location of a single interchange along with the alignment of the Shirley Gate Road extension. Shirley Gate Road Extended Corridor Planning Study
  4. 4. County of Fairfax, Virginia Department of Transportation 4 Shirley Gate Road Extended Corridor Planning Study
  5. 5. County of Fairfax, Virginia Department of Transportation 5 Analysis of Existing Conditions LOS and Approximate 95th Percentile Queue Lengths Shirley Gate Road Extended Corridor Planning Study
  6. 6. County of Fairfax, Virginia Department of Transportation 6 Crash Analysis Popes Head Road Intersection Crash Rates Average Intersection Crash Rates along Fairfax County Parkway Shirley Gate Road Extended Corridor Planning Study
  7. 7. County of Fairfax, Virginia Department of Transportation 7 Stakeholder Screening of Alternatives • Five meetings held between May and September 2015 – Guided the development of measures of effectiveness (MOEs) – Provided adjustments to weighting values • Major categories of MOEs used for alignment selection: – Impacts to Adjacent Properties – Impacts on Transportation System – Cost Shirley Gate Road Extended Corridor Planning Study
  8. 8. County of Fairfax, Virginia Existing, 2040 No Build, and 2040 Build Volumes 8 NNOT TO SCALE 0 (0) [15,500] 34,000 (33,900) [34,400] 16,000 (13,900) [14,500] 39,000 (45,000) [46,600] 35,000 (54,100) [50,800] 72,000 (102,000) [100,500] 71,000 (98,600) [107,500] Roadway Segment Shirley Gate Road Extension 2014 Existing Link Volume (veh/day) (2040 No Build Daily Link Volume (veh/day)) [2040 Build Daily Link Volume (veh/day)] XX,XXX (XX,XXX) [XX,XXX] 25,000 (26,900) [24,000] 3,400 (3,800) [3,400] 44,000 (60,500) [54,600] 31,000 (42,100) [34,900] 31,000 (38,400) [32,300] 7,200 (17,700) [22,200] 20,000 (26,200) [29,200] Network Assumptions: No Build •Fairfax County Parkway: 6 Lanes •Braddock Road: 6 Lanes (east of FCP) Build (in addition to No Build) •Shirley Gate Road Extension: 4 Lanes •Interchange with FCP on Shirley Gate Road Extension Alignment 66,000 (80,900) [85,400] Shirley Gate Road Extended Corridor Planning Study 1,700 (2,400) [4,300]
  9. 9. County of Fairfax, Virginia No Build vs. Build Forecast (2040) Volume Change 9 NNOT TO SCALE Roadway Segment Daily Volume Change (2040 Build vs. 2040 No Build) Volume Increase of More Than 5% Volume Increase of 0-5% Volume Decrease of 0-5% Volume Decrease of More Than 5% Shirley Gate Road Extended Corridor Planning Study
  10. 10. County of Fairfax, Virginia Alignment and Interchange Options Department of Transportation 10 Option 1A Option 1B Option 1C Shirley Gate Road Extended Corridor Planning Study Option 2A (2) 0 250 500 1,000 Feet N Alignment Option Cul-de-Sac Option 2A (1) Potentia l Park Access Potential Park Access Option 2A/2B Potential Park Access * Future Traffic Signal Future Intersection (traffic control TBD) Future Local Road Interchange Ramp Proposed Bridge
  11. 11. County of Fairfax, Virginia Preferred Alignment Northern Alignment 1B Southern Alignment 2A (1) Department of Transportation 11 Shirley Gate Road Extended Corridor Planning Study Potential Park Access
  12. 12. County of Fairfax, Virginia Department of Transportation 12 Benefits of Shirley Gate Road Extension and Interchange Improvements • Reduced traffic volumes along area roadways/intersections – Popes Head Road – Braddock Road – Route 123 – Intersection of Route 123 and Braddock Road • Reduced travel times along Fairfax County Parkway (FCP) and Popes Head Road • Improved safety at FCP/Popes Head Road • Improved accessibility to FCP for Popes Head Road residents • Improved access to the west end of the City of Fairfax/Fair Oaks Shirley Gate Road Extended Corridor Planning Study
  13. 13. County of Fairfax, Virginia Department of Transportation 13 Mitigation Considerations • Follow-up Analysis/Coordination regarding Shirley Gate Road Driveway Access (Route 29 to Braddock Road) • Continuing efforts to improve intersection operations – Shirley Gate Road/Route 29 (Lee Highway) – Waples Mill Road/Route 50 (through Transform66 implementation) • Coordination with City of Fairfax in update of Transportation Plan – Consideration of extending Government Center Parkway to Jermantown Road – Widening of Jermantown Road north of Route 50 to four lanes • Identification of improvements during imminent Fairfax County Parkway Visioning Project Shirley Gate Road Extended Corridor Planning Study
  14. 14. County of Fairfax, Virginia Department of Transportation 14 • Public Hearing Process associated with amending the Comprehensive Plan • Submit Plan Amendment Nomination to Planning Commission and Board of Supervisors • Follow-up Analysis/Coordination regarding Shirley Gate Road Driveway Access (Route 29 to Braddock Road) • Begin design - 2016 Next Steps Shirley Gate Road Extended Corridor Planning Study

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