Operational Analysis of Dulles Toll Road Ramps to Tysons
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Operational Analysis of Dulles Toll Road Ramps to Tysons

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Operational Analysis of Dulles Toll Road Ramps to Tysons
May 30, 2013

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  • 1. TysonsMay 30, 20131Operational Analysis ofDulles Toll RoadRamps to Tysons
  • 2. TysonsAgenda2• Tysons Growth, Transit and Vehicle forecasts• Overview & Assumptions• Traffic Analysis• Comparison of Options• Timeline, Other Projects• Questions & Comments
  • 3. TysonsTysons Transit, Growth3and A Comparison to OtherJurisdictions• The future transit goals for Tysons are very aggressive.• Even in New York City, new developments will result inadditional vehicle trips.
  • 4. TysonsTysons Transit, Growth4and A Comparison to OtherJurisdictions• The overall trip reduction goals for Tysons are very high
  • 5. TysonsTysons Transit, Growth5and A Comparison to OtherJurisdictions• The result is a low growth in vehicle trips compared tothe growth in land use
  • 6. TysonsOverview & Assumptions• All Options include:– Comp. Plan Table 7 Improvements– Widening of I-495 (including HOT Lanes/Connections)– Extension of Boone Blvd– Widening of Route 7– Jones Branch Connector / Scotts Crossing Extension– Grid of Streets• Assumes 60% of the Grid is in place in 2030• No Build Scenario does not include:– Collector-Distributor Road or Urban Frontage Road– Any of the three Ramp Options:• Boone Boulevard Ramp• Greensboro Drive• Jones Branch Ramp6
  • 7. Tysons2030 No Build: EB AM AssignedVolume vs Capacity73,4681.82General Use9,8911.50HOV Lane2,0351.36Legendx,xxx – Assigned Link Volume, Over capacityx.xx – Assigned Link v/c ratio, Over capacityHOV Lane1,2281.25General Use9,1371.04FFFIntersection Level of ServiceLOS F (Delay > 150 seconds)LOS F (Delay > 300 seconds)FFF
  • 8. Tysons82,0021.05 2,6631.402030 No Build: WB PM AssignedVolume vs CapacityGeneral Use10,0471.52HOV Lane1,8841.26General Use8,1611.52HOV Lane1,5521.03FFFFIntersection Level of ServiceLOS F (Delay > 150 seconds)LOS F (Delay > 300 seconds)FFLegendx,xxx – Assigned Link Volume, Over capacityx.xx – Assigned Link v/c ratio, Over capacity
  • 9. Tysons2030 Option 1: EB AM AssignedC-D Roads Volume vs Capacity94,4291.111,9731.04General Use10,1041.53HOV Lane2,1391.43HOV Lane1,9111.27FFIntersection Level of ServiceLOS F (Delay > 150 seconds)LOS F (Delay > 300 seconds)FFLegendx,xxx – Assigned Link Volume, Over capacityx.xx – Assigned Link v/c ratio, Over capacity
  • 10. Tysons2030 Option 1: WB PM AssignedC-D Roads Volume vs Capacity10General Use10,6961.62HOV Lane2,1361.42HOV Lane1,5911.06HOV Lane1,5001.00FIntersection Level of ServiceLOS F (Delay > 150 seconds)LOS F (Delay > 300 seconds)FFLegendx,xxx – Assigned Link Volume, Over capacityx.xx – Assigned Link v/c ratio, Over capacity
  • 11. Tysons2030 Option 2: EB AM AssignedUrban Frontage Road Volume vs Capacity114,7211.18General Use10,1611.54HOV Lane2,1631.44HOV Lane1,8661.24FIntersection Level of ServiceLOS F (Delay > 150 seconds)LOS F (Delay > 300 seconds)FFLegendx,xxx – Assigned Link Volume, Over capacityx.xx – Assigned Link v/c ratio, Over capacity
  • 12. Tysons122030 Option 2: WB PM AssignedUrban Frontage Road Volume vs CapacityGeneral Use10,6051.61HOV Lane2,0901.39HOV Lane1,5351.02FIntersection Level of ServiceLOS F (Delay > 150 seconds)LOS F (Delay > 300 seconds)FFLegendx,xxx – Assigned Link Volume, Over capacityx.xx – Assigned Link v/c ratio, Over capacity
  • 13. TysonsKey Intersection Summary (AM)13
  • 14. TysonsKey Intersection Summary (PM)14
  • 15. TysonsAdvantages15Option 1 Option 2Boone Blvd Ramp, Greensboro Dr Ramp, &Jones Branch Ramp with C-D RoadBoone Blvd Ramp, Urban Frontage Roads, &Jones Branch RampLess costlyFunctions similar to other “highway/freeway”connectionsDriver expectation; exit/entrance ramps aresimilar to others in the areaSeparation of thru and ramp trafficHigher design and travel speedsMostly at-gradePhased construction of the ramps possibleCompatible with the highly urbanized visionDistributes traffic to two points between Route 7and Spring Hill RoadProvides a transition between higher speeds onthe DTR and slower speeds within the grid ofstreetsMore bicycle and pedestrian friendlyProvides additional access to the east on theDTR
  • 16. TysonsDisadvantages16Option 1 Option 2Boone Blvd Ramp, Greensboro Dr Ramp, &Jones Branch Ramp with C-D RoadBoone Blvd Ramp, Urban Frontage Roads, &Jones Branch RampLoads traffic into a single intersection alongTyco RoadIncludes another higher speed ramp(Greensboro) tying into the gridGreensboro ramp encroaches more toward theresidential areas to the northLess bicycle and pedestrian friendlyDoes not provide additional access to the easton the DTRMore expensive due to the structuresMore difficult to phase constructionRelies on signalized intersections to functionMore significant visual impacts due to the DTRoverpasses
  • 17. TysonsComparison Table17NOTE: Estimated cost to construct the ramps and C-D/urban frontage roads included in each option. Costs are in 2013 dollars. The costs were computed using the VDOT Transportation & Mobility Planning Division, Statewide Planning Level CostEstimates and supplemented where costs were not provided. Due to the space constraints throughout the project corridor, the retaining walls were assumed to be MSE walls. The costs do not include ROW, utilities, drainage, stormwatermanagement, environmental mitigation, or the reconstruction of impacted bridges or MWAA facilities, as these costs are expected to be similar for both options.• Traffic– Both options improve intersection LOS and reduce delay• Environmental Impacts– Noise, Visual, Air, Park Land, Waterways– Will be quantified further in future studiesAlternativeImprovementto Route 7IntersectionOperations(AM / PM)Improvementto Spring HillIntersectionOperations(AM / PM)Improvementto Grid ofStreetsIntersectionOperations(AM / PM)Impacts toMerging /Weaving alongDTREstimatedIncrease inImperviousArea, SFEstimatedROW &PermanentEasementAreas, SFEnvironmentalEstimatedConstructionCostOption 1 - Boone BlvdRamp, Greensboro DrRamp, & Jones Branch DrRamp with C-D RoadMedium /Medium1,550,000 770,000 $250 MillionOption 2 - Boone BlvdRamp, Urban FrontageRoads, & Jones Branch DrRampMedium / High 1,560,000 760,000 $330 MillionLow / Low Low / Medium Low / LowNo SignificantDifferenceBetween theTwo Options,Will be StudiedFurther in MoreDetail
  • 18. Tysons• Active Traffic Management – Main Line SpeedHarmonization• Open Road Tolling• Ramp Metering (Route I-66 in Arlington)• Increase Capacity to Toll Road/Access Road• Congestion Pricing• Improve Transit NetworkOther Strategies thatCan be Considered toImprove Operations18
  • 19. TysonsNext Steps• Study Findings, Final Feasibility Report Summer 2013• Tysons Open House June 11, 2013@ Westbriar Elementary School• Metropolitan Washington Airports Authority 2013 - 2014DTR Corridor StudyDulles Airport to I-495 Interchange• Further Studies and Public Participation TBD– National Environmental Policy Act Study– Interchange Justification Report19
  • 20. TysonsProject Timelines20LegendProject # DescriptonProject Cost (inmillions)Estimated ProjectStartEstimated ProjectCompletion3 Extension of Jones Branch Connection to inside I-495 22(1)FY13 FY1811 Rt.123 Widening from Old Courthouse Road to Rt.7 $8 FY14 FY201 Rt.7 Widening from Rt.123 to I-495 $22 FY15 FY2110 Rt.123 Widening from Rt.7 to I-495 $20 FY16 FY2112 Rt.7 Widening between I-495 and I-66 $71 FY17 FY214 Rt.7 Widening from the Dulles Toll Road to Reston Avenue $300 FY18 FY25$443 FY13 FY255 Greensboro Drive Extension west from Spring Hill Road to Tyco Road $58 FY28 FY3414 I-495 Overpass at Tysons Corner Center $18 FY29 FY356 Dulles Toll Road Ramp to Greensboro Drive Extension $28 FY28 FY368 Dulles Toll Road Eastbound Collector Distributor $62 FY28 FY362 Boone Blvd Extension west from Rt.123 to Ashgrove Lane $126 FY28 FY367 Dulles Toll Road Westbound Collector Distributor $124 FY28 FY379 Dulles Toll Road Ramp to Boone Blvd Extension $79 FY28 FY3713 Widen Magarity Road from Lisle/Rt.7 to Great Falls Street $63 FY28 FY3715 Widen Gallows Road from Rt.7 to Prosperity Ave $94 FY28 FY38$652 FY28 FY3817 Dulles Toll Road Ramp to Jones Branch Drive $38 FY43 FY5116 I-495 Additional Lane (Outer Loop between Rt.7 and I-66 $74 FY43 FY53$112 FY43 FY53Phase III Total:Tysons Wide Project Status as of 03-12-13Phase I (Projects Completed 2013-2027)Phase I Total:Phase II (Projects Completed 2028-2042)Phase II Total:Phase III (Projects Completed 2042-2053)
  • 21. Tysons21Questions & Comments