The Alexandria Extension is a short rail line in Washington, D.C. and Prince George's County, Maryland.
[1] The Alexandria Extension runs south 7.2 miles (11.6 km) from a junction in Hyattsville, Maryland to the beginning of the RF&P Subdivision just before the Anacostia Railroad Bridge in Southeast D.C.
This portion runs parallel to Benning Yard, the Landover Subdivision, the Washington Metro Orange Line, and the Anacostia Freeway for roughly the southern half of its length.
Its southern portion, the Shepherd Industrial Spur, continues running alongside the Anacostia Freeway until it reaches Joint Base Anacostia–Bolling.
This spur served several industries, including Bolling Air Force Base and the Blue Plains Advanced Wastewater Treatment Plant.
[2] Plans were made to reuse the track as part of the Anacostia Line of the DC Streetcar, but this did not occur.