Ronald Reagan Washington National Airport (formerly National Airport): DCA, is a Washington Metro station in Arlington, Virginia on the Blue and Yellow Lines. The station platform is elevated and covered and is the last above ground station on the Yellow Line in Virginia, heading into Washington, D.C. It is one of only two stations in the system to have three tracks (the other being West Falls Church). The station is located across Smith Boulevard from the B and C terminals from Ronald Reagan Washington National Airport (DCA); the airport shuttle bus carries people to and from Terminal A. The mezzanines are directly connected to the B and C terminals by pedestrian walkways to Level 2 (gate level). The airport's Abingdon Plantation historical site is near the station.
The station opened on July 1, 1977. Its opening coincided with the completion of 11.8 miles of rail between National Airport and RFK Stadium and the opening of the Arlington Cemetery, Capitol South, Crystal City, Eastern Market, Farragut West, Federal Center SW, Federal Triangle, Foggy Bottom–GWU, L'Enfant Plaza, McPherson Square, Pentagon, Pentagon City, Potomac Avenue, Rosslyn, Smithsonian and Stadium–Armory stations. When service began on July 1, 1977, it was the southern terminus of the Blue Line, and remained so until the extension to Huntington opened on December 17, 1983.
During construction of a second canopy at the station, Metro began running trains through the center track even though it had not been constructed for standard operations, and on January 20, 2003, a Blue Line train derailed at the switch. No injuries resulted, but the accident delayed construction by a number of weeks. The center track was originally intended for relaying trains.