The Suitland Parkway is a parkway in Washington, D.C., and Prince George's County, Maryland, administered and maintained by the U.S. National Park Service (NPS), National Capital Parks-East. The road has partial controlled access with a combination of interchanges and at-grade intersections, but without property access for neighboring land-owners. Conceived in 1937, it was built during World War II to provide a road connection between military facilities in the Washington, D.C. metropolitan area. It fully opened on December 9, 1944 as the Camp Springs highway, so called because it connected Camp Springs (now Joint Base Andrews) in Prince George's County with Bolling Air Force Base. However one lane of the highway was opened in mid-October 1944. The Suitland Parkway is long. Its eastern terminus is at Pennsylvania Avenue (Maryland Route 4), just outside the Capital Beltway and near Joint Base Andrews . Its western terminus is at Interstate 295 and the northbound approach to the Frederick Douglass Memorial Bridge. The parkway was listed on the National Register of Historic Places in 1995. It is also part of the National Highway System. The eastern half was a two-lane limited-access road, and the western half a four-lane divided limited-access road. In the 1990s the eastern half was doubled in size to match the western half, with that work completed in 1996. Around the same time a 2-mile-long trail, the Suitland Parkway Trail, was constructed from Pomeroy Road to Southern Avenue. Route description The Suitland Parkway begins at an interchange with I-295 and South Capitol Street in Washington, D.C., heading southeast as a four-lane divided highway. The road intersects Firth Sterling Avenue SE at a traffic light before passing near residential areas as a limited-access road and curving to the south. Just after Firth Sterling Avenue SE, the parkway used to intersect a railroad line at a road crossing. The tracks have been abandoned and removed, but signage for the old railroad crossing can still be seen. The parkway comes to a westbound exit for Sheridan Road SE and an eastbound entrance from Sumner Road SE. that provides access to Martin Luther King, Jr. Avenue SE. At the intersection of Sheridan Road SE and Pomeroy Road SE, a bike path begins and runs parallel to the westbound lanes of the parkway through the remainder of Washington, D.C. Past this, the Suitland Parkway curves east through woods and reaches a traffic light with Stanton Road