Dulles Corridor Metrorail Project Phase 2

A Major Extension of the Silver Line

The Phase 2 extension of the Dulles Corridor Metrorail Project is currently under construction and scheduled for completion in 2020.

The project includes five at-grade stations and an elevated station within Washington Dulles International Airport.

The Silver Line will be extended 11.4 miles from Fairfax County, through the airport, and into Loudoun County.

The extension will serve Virginia’s largest and second largest employment centers, Tysons Corner and the Reston/Herndon area, as well as provide a direct transport from the airport to Washington, D.C.

Owner: Metropolitan Washington Airports Authority
Location: Fairfax and Loudoun Counties, VA
Services: Geospatial, Mapping, and Survey, Engineering, Construction, Architecture, Environmental
Markets: Transportation
Client/Lead Designer: Parsons Corporation

Contracting Joint Venture: Clark/Kiewit
Project Cost: $1.3 billion
Completed: 2020
Region: Mid-Atlantic

The second phase of the Dulles Corridor Metrorail Project will extend the Silver Line 11.4 miles from the eastern side of Reston in Fairfax County, Virginia, through Washington Dulles International Airport, and further west into the Ashburn area of Loudoun County. The finished project will be a 23-mile addition to the existing 103-mile transit system.

We are providing a wide range of surveying, engineering, and construction inspection services to the design-build team, including highway, roadway, and interchange modification design. Our work includes the structural design of stations, 31 pedestrian bridges, and rail bridges, as well as architecture; mechanical, electrical, and plumbing design; and hydrologic and hydraulic studies and design. The scope also includes site engineering, environmental studies and permitting, erosion and sediment control design, right-of-way coordination, and utility design and coordination.

Our team is developing traffic maintenance plans for the heavily traveled Dulles Corridor, which includes the Dulles Toll Road, the Dulles International Airport Access Highway, the airport roadway network, and the Dulles Greenway. In addition, we have been challenged to meet new water quality design criteria under the Virginia Stormwater Management Program, which will be the first time it is implemented on a project of this size and scope. We are also leading the quality assurance/quality control program for the construction phase, providing oversight, testing, and inspection for the project.

stations

11.4

miles of track