Ballston–MU is a side platformed Washington Metro station in Arlington, Virginia, United States. The station opened on December 1, 1979, and is operated by the Washington Metropolitan Area Transit Authority (WMATA). The station serves the Orange and Silver Lines. The station serves the transit-oriented community of Ballston, Ballston Common Mall as well as Marymount University (MU). Ballston–MU is also a major Metrobus transfer station. The station entrance is located at North Fairfax Drive and North Stuart Street, near the intersection of Wilson Boulevard and North Glebe Road. It is the last underground station for outbound trains on both lines. West of this station, the tracks rise above ground inside the median of Interstate 66.HistoryOriginally to be called Glebe Road, in March 1977 the Metro board changed its name to Ballston. After several years of construction, the station opened on December 1, 1979, as the western terminus of the Orange Line. Its opening coincided with the completion of approximately 3mi of rail west of the Rosslyn station and the opening of the Court House, Clarendon and Virginia Square stations. Ballston would serve as the western terminus of the Orange Line from its opening through the opening of its extension to the Vienna station on June 7, 1986. The station remains as the final underground station for westbound travelers since its completion.
