May 31, 2012
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Operational Analysis of Dulles Toll Road Ramps to Tysons
Agenda
• Review of Boone Blvd. Connection
• Review of Progress
• Preferred Options
• Public and Stakeholder Outreach Schedule
• Next Steps
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• First step in creating the envisioned street grid and expanded roadway network
• Improve connectivity and parcel access due to the loss of the Route 7 service roads
• Provides one leg of a parallel road system on both sides of Route 7; Greensboro Drive is the other leg.
• Considers context-sensitive solutions• Minimizes Community and Environmental
impacts3
Boone Boulevard Extension
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• 12’ wide landscaped median (or single-left turn lanes as needed)• Two 11’ travel lanes in each direction• 5’ wide bike lane in each direction• 8’ wide parking lane in each direction• 5’-6’ wide landscaped buffer• 8’-10’ wide sidewalk
Boone Boulevard Extension
Recommended Cross Section
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Boone Boulevard Extension
Recommended Alignment
Review of Progress
• Study Kickoff
May 24, 2011
• Data Gathering & Analysis
June - August 2011
• Alternatives Workshop
September, 2011• Monthly Progress Meetings
Ongoing(Included representatives from FCDOT, VDOT & MWAA)
• Selection of Preferred Options
September, 2012
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Preferred Options• Developed nine scenarios including providing
upgrades to existing Route 7 and Spring Hill Road Interchanges
• Improvements to existing Route 7 and Spring Hill Road Interchanges were not cost effective based on the minimal capacity added
• Compared three preferred alternatives against the “No Build” Alternative
• Measured the Network Performance of each preferred option and compared traffic operations
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DTR & Route 7 Diversion DiamondDTR & Route 7
Diversion Diamond
DTR & Route 7 Modified Interchange
(Flyover Ramp)
DTR & Route 7 Modified Interchange
(Flyover Ramp)
2030 No Build2030 No Build
Preferred OptionPreferred Option 2030 No Build2030 No Build
Compare 2030 No Build vs. Preferred Interchange
modification Option
Preferred OptionCombined with
Greensboro Dr. Ramp& Boone Blvd. Ramp
Preferred OptionCombined with
Greensboro Dr. Ramp& Boone Blvd. Ramp
Preferred OptionCombined with
Boone Blvd. Ramp& Jones Br. Dr. Ramp
Preferred OptionCombined with
Boone Blvd. Ramp& Jones Br. Dr. Ramp
2030 No BuildCombined with
Boone Blvd. Ramp &Greensboro Dr. Ramp& Jones Br. Dr. Ramp
2030 No BuildCombined with
Boone Blvd. Ramp &Greensboro Dr. Ramp& Jones Br. Dr. Ramp
Preferred OptionCombined with
Greensboro Dr. Ramp& Boone Blvd. Ramp
Preferred OptionCombined with
Greensboro Dr. Ramp& Boone Blvd. Ramp
Preferred OptionCombined with
Urban Frontage Road
Preferred OptionCombined with
Urban Frontage Road
Preferred OptionCombined with
Urban Frontage Road
Preferred OptionCombined with
Urban Frontage Road
2030 No BuildCombined with
Boone Blvd. Ramp &Greensboro Dr. Ramp& Jones Br. Dr. Ramp
2030 No BuildCombined with
Boone Blvd. Ramp &Greensboro Dr. Ramp& Jones Br. Dr. Ramp
Preferred Options
Preferred Options
Preferred OptionCombined with
Greensboro Dr. Ramp& Boone Blvd. Ramp
Preferred OptionCombined with
Greensboro Dr. Ramp& Boone Blvd. Ramp
Preferred OptionCombined with
Urban Frontage Road
Preferred OptionCombined with
Urban Frontage Road
2030 No BuildCombined with
Boone Blvd. Ramp &Greensboro Dr. Ramp& Jones Br. Dr. Ramp
2030 No BuildCombined with
Boone Blvd. Ramp &Greensboro Dr. Ramp& Jones Br. Dr. Ramp
2030 No Build2030 No Build
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Preferred Options
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Preferred Option 1 – Boone Boulevard, Greensboro Drive
Preferred Options
11
Preferred Option 2 – Urban Frontage Road
Preferred Options
12
Preferred Option 3 – Boone Boulevard, Greensboro Drive, Jones Branch
Pros & Cons of The Options
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• Cons: – Impacts to RPA (Boone Blvd. Connection)– Impact to Parkland (Boone Blvd. Connection)– Impact to Residential Communities (Boone Blvd. Connection & Urban
Frontage Option)– Impact to Dominion electrical substation– Relocation of DTR Administration Building/Facilities– Impact on the Adjacent Developments– Impact on the Aesthetics
• Pros:– Reduces traffic volume on existing interchanges– Improves Mobility within Tysons– Effective in handling traffic volumes in and out of Tysons– Provides better distribution of traffic to the future street grid system– Minimizes entry and exit ramps from/to DTR (Urban Frontage Option)– Fits within the urban character of redeveloped Tysons (Urban Frontage
Option)
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Traffic Analysis• Measures of Effectiveness Considered:
Average Delay / Vehicle
Average Speed / Vehicle
Total Delay
Total Travel Time
Merge/Diverge Conditions
• Compared all options with the No-Build Condition
• Option III showed Improvement in the AM.• Option II showed improvement in PM.
Next Steps
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• Tysons Partnership Briefing
May 23, 2012
• Public Information Meeting
May 31, 2012• Evaluate Impacts
Summer 2012(Meetings with VDOT, MWAA, Land Owners, Developers & Utilities)
• Second Public Information Meeting
Fall 2012
• Study Completion
Winter 2012