The Silver Line extension includes 11 new stations.
Phase 1
Phase 1 includes five stations along 11.7 miles. Four are in Tysons Corner and the fifth, which served as the temporary terminus, is on the eastern edge of Reston.
- McLean Station is on the northwest side of Route 123 at Scotts Crossing/Colshire Drive (aerial)
- Tysons Station is on the north side of Route 123 at Tysons Boulevard (aerial)
- Greensboro Station is in the median of Route 7, just west of the Route 123 overpass (half below ground, half at grade)
- Spring Hill Station is in the median of Route 7 at Spring Hill Road (aerial)
- Wiehle-Reston East Station is in the median of the Dulles Toll Road/Dulles Airport Access Highway just west of the Wiehle Avenue overpass (at grade)
Phase 2
Phase 2 includes six stations along 11.4 miles from the Wiehle-Reston East Station to Ashburn. Locations are:
- Reston Town Center Station is in the median of the Dulles Toll Road/Dulles Airport Access Highway just west of the Reston Parkway overpass (at grade)
- Herndon Station is in the median of the Dulles Toll Road/Dulles Airport Access Highway near the existing Herndon-Monroe Park and Ride lot (at grade)
- Innovation Station is in the median of the Dulles Toll Road/Dulles Airport Access Highway east of Route 28 near the Center for Innovative Technology (at grade)
- Dulles Airport Station is along Saarinen Circle across from the terminal (aerial)
- Loudoun Gateway Station is along Route 606 on the west side of Dulles Airport in the median of the Dulles Greenway (at grade)
- Ashburn Station is in the median of the Dulles Greenway at Route 772/Ashburn Village Boulevard (at grade)
Alignment
Most of the rail extension is in the median of the Dulles International Airport Access Highway and Dulles Toll Road, but the Silver Line alignment also serves Tysons Corner and Dulles Airport. The rail line leaves the Dulles Connector Road and travels along the northwest side of Route 123, through a tunnel at the intersection of Routes 7 and 123 and then westward in the median of Route 7 before rejoining the median of the Dulles Toll Road/Dulles Airport Access Highway.
The extension includes 11 Metrorail stations, a new rail yard on Dulles Airport property and improvements to an existing rail yard at the West Falls Church Station. This alignment was selected because it offered the highest ridership potential with the fewest impacts on residential areas and the natural environment.