<P> The 11.7 miles ( 18.8 km ) portion of the Silver Line between its split from the Orange Line and Wiehle -- Reston East station is in Fairfax County , Virginia and was constructed as Phase 1 of the Dulles Corridor Metrorail Project . Phase 2 expands the line another 11.5 miles ( 18.5 km ) to Loudoun County via Washington Dulles International Airport and adds six stations to the line . Preliminary construction of Phase 2 began in 2014 , with an opening scheduled for sometime in 2020 . The $6.8 billion project is the largest expansion by route mileage since the inception of Metro in 1976 . </P>
<P> The 11.7 miles ( 18.8 km ) portion of the Silver Line between its split from the Orange Line and Wiehle -- Reston East station is in Fairfax County , Virginia and was constructed as Phase 1 of the Dulles Corridor Metrorail Project . Phase 2 expands the line another 11.5 miles ( 18.5 km ) to Loudoun County via Washington Dulles International Airport and adds six stations to the line . Preliminary construction of Phase 2 began in 2014 , with an opening scheduled for sometime in 2020 . The $6.8 billion project is the largest expansion by route mileage since the inception of Metro in 1976 . </P>
when will the metro line to dulles be finished
when will the metro line to dulles be finished
sometime in 2020
sometime in 2020