May 31, 2012

1

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

2

• 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

4

• 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

5

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

6

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

7

8

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)

14

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

15

• 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