Potomac Avenue station

The Blue Line is a rapid transit line of the Washington Metro system, consisting of 27 stations in Fairfax County, Alexandria and Arlington, Virginia; the District of Columbia; and Prince George's County, Maryland, United States. The Blue Line runs from Franconia–Springfield to Downtown Largo. The line shares tracks with the Orange Line for 13 stations, the Silver Line for 18, and the Yellow Line for six. Only three stations are exclusive to the Blue Line.

Franconia–Springfield is a Washington Metro rapid transit station and Virginia Railway Express commuter rail station located in Springfield, Virginia, United States. The station is the southwestern terminus of the Metro Blue Line and an intermediate station on the VRE Fredericksburg Line. It is also a major bus terminal for Fairfax Connector buses, plus other local and intercity bus routes. The station has one island-platform serving the two Metro tracks, plus two side platforms serving the RF&P Subdivision on which the Fredericksburg Line runs.

Eastern Market is a Washington Metro station in the Capitol Hill neighborhood of Washington, D.C., United States. The island platformed station was opened on July 1, 1977, and is operated by the Washington Metropolitan Area Transit Authority (WMATA). The station currently provides service for the Blue, Orange, and Silver Lines. The station is located in Southeast D.C. at Pennsylvania Avenue and 7th Street. It is named after the nearby Eastern Market, a historic public marketplace.

The Silver Line is a rapid transit line of the Washington Metro system, consisting of 34 stations in Loudoun County, Fairfax County and Arlington County, Virginia, Washington, D.C., as well as Prince George's County, Maryland. The Silver Line runs from Ashburn in Virginia to Downtown Largo in Maryland. Five stations, from both lines' eastern terminus at Downtown Largo to Benning Road, are shared with the Blue Line alone; 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 five stations of Phase 1, which began service on July 26, 2014, and the six stations of Phase 2, which began service on November 15, 2022, are exclusive to the Silver Line.

Ashburn station is a Washington Metro station in Loudoun County, Virginia, United States, that serves as the Silver Line's western terminus. Originally planned to begin operation in 2018, the station opened on November 15, 2022.

The Orange Line is a rapid transit line of the Washington Metro system, consisting of 26 stations in Fairfax County and Arlington, Virginia; the District of Columbia; and Prince George's County, Maryland, United States. The Orange Line runs from Vienna in Virginia to New Carrollton in Maryland. Half of the line's stations are shared with the Blue Line and over two thirds are shared with the Silver Line. Orange Line service began on November 20, 1978.

Vienna is a Washington Metro station on the Orange Line in Fairfax, Virginia. The station is in the median of Interstate 66 at Nutley Street, also known as Virginia State Route 243, in Fairfax.

An island platform is a station layout arrangement where a single platform is positioned between two tracks within a railway station, tram stop or transitway interchange. Island platforms are popular on twin-track routes due to pragmatic and cost reasons. They are also useful within larger stations where local and express services for the same direction of travel can be provided from opposite sides of the same platform thereby simplifying transfers between the two tracks. An alternative arrangement is to position side platforms on either side of the tracks. The historical use of island platforms depends greatly upon the location. In the United Kingdom the use of island platforms is relatively common when the railway line is in a cutting or raised on an embankment, as this makes it easier to provide access to the platform without walking across the tracks.

Downtown Largo is an island-platformed Washington Metro station in Lake Arbor census-designated place, unincorporated Prince George's County, Maryland, United States, with a Largo postal address.

Stadium–Armory is a Washington Metro station located in Southeast, Washington, D.C. The station was 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. It is a transfer station, as this is the last station shared by the three lines before the lines diverge going east; east of the station, all three lines rise above ground onto elevated track to cross over the Anacostia River. At the diverge point, the Orange Line continues above ground veering northbound, and the Blue and Silver Lines continue eastbound entering a tunnel.

New Carrollton station is a joint Washington Metro, MARC, and Amtrak station just outside the city limits of New Carrollton, Prince George's County, Maryland located at the eastern end of the Metro's Orange Line. The station will also serve as the eastern terminus of the Purple Line, currently under construction, and is adjacent to the Capital Beltway.