Dulles Metrorail - Construction


Aerial guideway at sunrise in Tysons Corner Dulles Metrorail Project and Hot Lanes Construction in Tysons Corner Guideway near old Chain Bridge Road along Eastbound Connector Road NATM Tunnel Construction Outbound NATM Tunnel Excavation Completed Route 7 Construction Truss erecting cement spans near I-495 Truss erecting span at I-495 and Route 123 Tunneling Under Tysons Corner Tysons Central Station (TPSS) Support of Excavation Tysons East Station Construction Wiehle Ave. Station Construction


Construction activities are officially underway along the entire 11-mile alignment of Phase 1 of the Dulles Corridor Metrorail Project from the West Falls Church Metrorail Station to the Dulles Connector Road, through Tysons and west to Wiehle Avenue in Reston. See the route map to reference locations listed below.

Construction Zones:

I-66/Dulles Connector Road

Overview:Metrorail will be constructed mostly at-grade in the median of the Dulles Connector Road (DCR) between I-66 and Route 123. The future Metrorail line will become elevated as it approaches Route 123.
Progress/Upcoming Work:Caissons and piers, which will support foundations for at-grade and aerial track work, are being built. You will continue to see more of these develop along the Dulles Connector Road median in the coming months.
Resources: NOTICE: Metrorail Construction Trucks to Use I-66 Inside the Beltway

Route 123 (Tysons)

Overview:The Metrorail line and station construction will occur along the north side of Route 123 (Chain Bridge Road) from the Dulles Connector Road to Route 7 in Tysons. The Route 123 track will be elevated and built over the Capital Beltway. Two Route 123 Metrorail Stations will be constructed at the Colshire Drive intersection near Capital One and the second between Tysons Blvd and International Drive near the Tysons Corner Center and Tysons Galleria.
Progress/Upcoming Work:Early preparation of the eastern portion of the 2,400-foot tunnel has begun at Route 123 and International Drive, including construction of a concrete plant. This month, other equipment and facilities essential to the tunnel construction will be put into place. Preliminary foundation work is taking place for the Tysons Central 123 station at Route 123 and Tysons Boulevard. Construction of the Tysons East station will begin ramping up in the coming weeks.
Right Lane Closure on Route 123:

To begin construction, the right lane of southbound Route 123 between Scotts Crossing Road and the I-495 Capital Beltway Inner Loop must close for approximately two years to allow workspace for crews to operate away from traffic and ensure thatthe Metro station can be built safely.Three thru lanes to Tysons will be maintained.


NOTICE: Two-Year Lane Closing on Southbound Route 123 Starts Feb. 22
MAP: Southbound Route 123 in Tysons
MAP: Southbound Route 123 in Tysons Close Up
PHOTOS: Southbound Route 123 Lane Closing
NOTICE: Changes to Scotts Crossing Road
NOTICE: Construction Activities Ramp Up Near Future Tysons East Metro Station
MAP: Route 123 Construction Look Ahead

Route 7 (Tysons)

Overview:Leesburg Pike (Route 7) will be expanded from 6 lanes to 8 lanes between Route 123 and the Dulles Toll Road as part of the Dulles Corridor Metrorail construction. The Route 7 expansion is necessary to make room for the future Metrorail line through Tysons Corner. Two Metrorail stations will be built on Route 7: Tysons Central 7 (Marshalls Drive) and Tysons West (Spring Hill Road) as part of the 23.4-mile Metrorail extension through Tysons Corner, Reston, Dulles International Airport, and Loudoun County. In addition to the expansion of Route 7 and the new Metrorail line, there are many other project benefits: o Utilities will be moved underground (utility poles removed) o Sidewalks added on both sides; Pedestrian bridges crossing Route 7 at Metrorail stations o Dual left turns at Tyco Road, Spring Hill Road and Gosnell Road/Westpark Drive intersections
Progress/Upcoming Work:Major lane shifts will occur along the eastbound lanes of Route 7 in a few locations. These are necessary to make room for construction of the two Metro stations that will be built in the median of Route 7. Mid-block left turns along Route 7 will be eliminated. Left turns and U-turns will be allowed at signalized intersections. The service roads will close permanently by the end of the year to begin the expansion of Route 7. Access to all businesses will remain open. Work has begun on the western portion of the tunnel at the northwest cloverleaf at Route 7 and Route 123 along the Frontage Road.

FACT SHEET: Route 7 Construction Overview
MAP: Route 7 Construction Look Ahead
NOTICE: Route 7 Service Road to Close Permanently
NOTICE Route 7 Traffic Pattern Changes at Marshalls Drive Intersection
NOTICE: Major Lane Shift; Tysons Central 7 Station Construction Begins

Dulles International Airport Access Highway (DIAAH)/Dulles Toll Road (DTR)/ Wiehle Ave

Overview:The Metrorail Line from Tysons to Wiehle Avenue (Reston) will be constructed in the median of the Dulles International Airport Access Highway at grade level. A metrorail station will be built at Wiehle Avenue in Reston. The station, at grade level, will include pedestrian bridges from the north and south sides of the Toll Road. This station will be the terminus point of the Phase 1 Dulles Metrorail extension.
Progress/Upcoming Work:Construction has started in the median of the DIAAH as well as near the future Wiehle Avenue station. Crews are clearing and preparing the median for metrorail construction.
Resources:NOTICE: DIAAH Median Clearing
NOTICE: Bridge Supporting Dulles Metro to be Built Above W&OD Trail