Reston, VA

Construction of the Silver Line extension into Loudoun County has cleared a major hurdle.

Crews with the Metropolitan Washington Airports Authority have begun the process of tying in the current Silver Line with the extension.

On Friday, crews began the tie-in process at the Wiehle-Reston East Metro Station, which would connect phase two’s computerized control systems to the rest of the Metrorail system.

Capital Rail Constructors, its subcontractors, the MWAA, and the Washington Metropolitan Area Transit Authority are cooperating to complete the effort.

“The tie-in project is critical and complicated work that requires close cooperation and coordination among contractors and WMATA,” said Charles Stark, MWAA senior vice president and head of the Dulles Corridor Metrorail Project.

The extension is expected to be fully operational in the spring. Currently, all five Silver Lien stations are closed during the summer shutdown.

Tie-in work will be completed by the end of July. After construction is completed, WMATA will assume ownership of phase two and conduct additional testing. A final date for completion of the overall project will be set at a later point.

“Months of preparation and coordination between Capital Rail Constructors, WMATA and the Airports Authority led to the initiation of the tie-in work, to ensure that software and other controls on both sections,” according to a statement from the Dulles Corridor Metro rail Project.

Once complete, the extension project will run along 11.5 miles of track from Wiehle Avenue to Ashburn.

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