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Tysons
May 8, 2012May 8, 2012
1
Operational Analysis of Dulles Toll Road Ramps to Tysons
Corner
Tysons
Agenda
• Review of Progress
• Preferred Options
• Public and Stakeholder Outreach Schedule
• Next Steps
2
Tysons Review of Progress
• Study Kickoff May 24, 2011
• Data Gathering & Analysis June - August 2011
• Alternatives Workshop September 23, 2011• Monthly Progress Meetings Ongoing
(Included representatives from FCDOT, VDOT & MWAA)
• Selection of Preferred Options March 21, 2012
3
Tysons 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
4
Tysons
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
5
Tysons 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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Tysons Preferred Options
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Preferred Option 1 – Boone Boulevard, Greensboro Drive
Tysons Preferred Options
8
Preferred Option 2 – Urban Frontage Road
Tysons Preferred Options
9
Preferred Option 3 – Boone Boulevard, Greensboro Drive, Jones Branch
Tysons
10
Network Performance ComparisonAM
Preferred Preferred Preferred Option 1 Option 2 Option 3
Average delay time per vehicle Seconds 329 370 355 255 Average number of stops per vehicles Number of Stops 9.0 11.8 12.0 7.6 Average speed MPH 13.0 14.4 13.9 16.1 Total delay time Hours 2204 2655 2236 1848 Total stopped delay Hours 713 1151 871 618 Total travel time Hours 3061 3713 3122 2801% Merges with LOS E or F Percentage 0% 0% 0% 0%% Diverges with LOS E or F Percentage 75% 60% 50% 43%
PM
Preferred Preferred Preferred Option 1 Option 2 Option 3
Average delay time per vehicle Seconds 401 367 272 432 Average number of stops per vehicles Number of Stops 9.7 7.7 6.2 9.4 Average speed MPH 12.3 13.6 17.5 11.1 Total delay time Hours 3175 3024 1967 3432 Total stopped delay Hours 1590 1808 1029 1919 Total travel time Hours 4306 4177 2983 4491% Merges with LOS E or F Percentage 50% 50% 25% 14%% Diverges with LOS E or F Percentage 25% 40% 50% 43%
Measure Unit No Build
AM
Preferred Preferred Preferred Option 1 Option 2 Option 3
Average delay time per vehicle Seconds 329 370 355 255 Average number of stops per vehicles Number of Stops 9.0 11.8 12.0 7.6 Average speed MPH 13.0 14.4 13.9 16.1 Total delay time Hours 2204 2655 2236 1848 Total stopped delay Hours 713 1151 871 618 Total travel time Hours 3061 3713 3122 2801% Merges with LOS E or F Percentage 0% 0% 0% 0%% Diverges with LOS E or F Percentage 75% 60% 50% 43%
PM
Preferred Preferred Preferred Option 1 Option 2 Option 3
Average delay time per vehicle Seconds 401 367 272 432 Average number of stops per vehicles Number of Stops 9.7 7.7 6.2 9.4 Average speed MPH 12.3 13.6 17.5 11.1 Total delay time Hours 3175 3024 1967 3432 Total stopped delay Hours 1590 1808 1029 1919 Total travel time Hours 4306 4177 2983 4491% Merges with LOS E or F Percentage 50% 50% 25% 14%% Diverges with LOS E or F Percentage 25% 40% 50% 43%
Measure Unit No Build
AM
PM
Tysons Next Steps
11
• Tysons Partnership Briefing
May 23, 2012
• Public Information Meeting
May 30, 2012
• Evaluate Impacts
Summer 2012
• Second Public Information Meeting
Fall 2012
• Study Completion
Winter 2012
