Metro Center is the central hub station of the Washington Metro rapid transit system in Washington, D.C. Metro Center was one of the original Metro stations, and has been in service since March 27, 1976.Metro Center is on the Blue, Orange, Red, and Silver Lines, and is a transfer station between the Red Line and the already-joined Blue, Orange and Silver Lines.LocationMetro Center is located in downtown Washington, under an area roughly extending east–west from 11th to 13th Streets Northwest, and north–south from F to H Streets Northwest. Its entrances are on G Street at 11th, 12th, and 13th Streets, and at the corner of 12th and F Streets. The station's only street elevator is on the east side of 12th Street north of G Street. It is the second busiest station in the Metrorail system after Union Station, averaging 30,500 passengers per weekday.The mezzanine (upper) level of the station contains side platforms for Red Line trains traveling towards Glenmont and towards Shady Grove. Orange Line and Blue Lines trains traveling in both directions share a center platform on the station's lower level.