Route 7 Widening and Bridge Rehabilitation

Location Tysons Corner, Fairfax County, VA


Duration July 2015 – May 2018

This $41M design-build project for the Virginia Department of Transportation reconstructs and widens the structurally deficient Route 7 bridge over Dulles Toll Road and the Airport Access Highway from four lanes to six lanes. Limited clearances within MWAA’s right-of-way required the design and installation of permanent foundations using micropiles to widen the existing bridge piers between Dulles Toll Road and the Dulles Access Highway. The project also includes a 10’ wide shared-use path that will be built for pedestrians and bikes to travel in each direction. This path incorporates grade separated crossings, including two pedestrian bridges and three tunnels.

Key Challenges & Project Details

  • Widens Route 7 bridges over Dulles Toll Road from four lanes to six lanes.
  • Coordination with various stakeholders, including Fairfax County, MWAA, adjacent businesses and residences, WMATA and the recently constructed Dulles Silver Line.
  • Complex maintenance and protection of traffic along existing Route 7 and on the Dulles Toll Road and Dulles Access Highway are required.
  • Wagman eliminated three construction phases of the seven phases proposed by VDOT to build the bridge in four phases.
  • Limited clearances within MWAA’s right-of-way required the design and installation of permanent foundations using micropiles to widen the existing bridge piers between the Dulles Toll Road and Dulles Access Highway.
  • The decks of two existing bridges over Dulles Toll Road will be widened in the middle to accommodate one extra lane on each bridge. The height of the bridges will be raised to meet standard clearance requirement of 16.5 feet.
  • FUN FACTS
    • Known in 1751 as Vestals Gap Road, Route 7 passed by Minor's Ordinary located in the area of present-day Leesburg. In 1754, at the beginning of the French and Indian War, the Virginia regiment marched this road under the command of George Washington.
  • Website Link

    http://www.novahistory.org/MiddleTurnpike/MiddleTurnpike.htm