Stadium–Armory station is a Washington Metro station in the Hill East neighborhood of Washington, D.C. The station opened on July 1, 1977, and is operated by the Washington Metropolitan Area Transit Authority (WMATA). Stadium–Armory serves the Blue, Orange, and Silver Lines. The station was named for its proximity to the RFK Stadium campus and the D.C. Armory.
The station is a transfer station, as this is the last station shared by the three lines before the lines diverge going east.
The D.C. Armory is a mixed armory and 10,000-seat arena in Washington, D.C. Managed by the Events DC, the Armory opened in 1941, as the headquarters, armory, and training facility for the District of Columbia National Guard. In 1994, it become a venue for a broad range of sports and public events. The Armory is adjacent to Stadium–Armory station and the RFK Stadium campus and future site of New Commanders Stadium.
The Silver Line is a rapid transit line of the Washington Metro system, consisting of 39 stations in Loudoun County, Fairfax County and Arlington County, Virginia, Washington, D.C., and Prince George's County, Maryland. The Silver Line runs from Ashburn in Loudoun County, Virginia to Largo and New Carrollton in Prince George's County, Maryland. Five stations, from both lines' eastern terminus at Largo to Benning Road, are shared with the Blue Line alone; five stations are shared with the Orange Line alone from both lines eastern terminus at New Carrollton to Minnesota Avenue; thirteen stations, from Stadium–Armory to Rosslyn, with both the Orange Line and Blue Lines; and five stations from Court House to East Falls Church with the Orange Line alone. Only the 11 stations from McLean to Ashburn are exclusive to the Silver Line. Five of these 11 stations began service on July 26, 2014 as Phase 1, and six began service as Phase 2 on November 15, 2022.
The 11.7-mile (18.8 km) portion of the Silver Line between its split from the Orange Line and Wiehle–Reston East is entirely in Fairfax County, Virginia and was constructed as Phase 1 of the Dulles Corridor Metrorail Project. Phase 2 expanded the line another 11.5 miles (18.5 km) to Ashburn in Loudoun County via Dulles International Airport. The $6.01 billion, 23.1-mile Dulles Corridor Metrorail Project is Metro's largest expansion by route mileage since its inception in 1976.