Southern Avenue station

Southern Avenue station is an island platformed Washington Metro station in Prince George's County, Maryland, United States. The station was opened on January 13, 2001, and is operated by the Washington Metropolitan Area Transit Authority (WMATA). Providing service for only the Green Line, the station is located on the southern side of Southern Avenue, putting it just outside the District of Columbia, opposite Valley Terrace straddling the D.C/Maryland border. Southern Avenue is the first station in Maryland going southeast on the Green Line.

Groundbreaking for the final segment of the Green Line occurred on September 23, 1995, and the station opened on January 13, 2001. Its opening coincided with the completion of approximately 6.5 mi of rail southeast of the Anacostia station and the opening of the Congress Heights, Naylor Road, Suitland, and Branch Avenue stations.

This station provides service to National Harbor via Metrobus route NH1 and TheBus route 35.

Station layout
Although this station is open-cut, and the next station east (railroad south) (Naylor Road) is elevated, there is an underground section of the Green Line's tracks between these two stations; additionally, the Southern Avenue station descends into a tunnel at its western (railroad northern) end. The construction and overall design of the station is similar to that of Greensboro on the Silver Line, and Arlington Cemetery on the Blue Line because of its depressed but open-air layout.