Martin Luther King, Jr. Avenue

Martin Luther King Jr. Avenue (also known as MLK Ave) is a major street in the District of Columbia traversing through both the Southwest and Southeast quadrants.

Martin Luther King Jr. Avenue SW begins at the southwestern tip of the District of Columbia near the Blue Plains Advanced Wastewater Treatment Plant. Headed north, the avenue overlaps with South Capitol Street from 2nd St SW to Halley Place SE, where it turns northeast, becoming Martin Luther King Jr. Avenue SE. As it crosses through the Congress Heights neighborhood, MLK Ave changes from a primarily residential neighborhood to a commercial district.

Also in the Congress Heights area, MLK Ave crosses both Alabama Avenue SE and Malcolm X Ave SE. After leaving Congress Heights, the street turns north, crossing throughout the campus of St. Elizabeths Hospital, the future home of the Department of Homeland Security. MLK Ave stays headed north, crossing the Suitland Parkway before reaching the Anacostia Metro Station. After passing the Anacostia Station, MLK Ave enters historic Anacostia, crossing Good Hope Road before terminating at the 11th Street Bridges.

Martin Luther King Jr. Avenue was originally constructed in 1855 as Asylum Avenue, when the Government Hospital for the Insane (later known as St. Elizabeths Hospital) was built on the "St. Elizabeth's tract" in the District of Columbia. It was renamed Nichols Avenue in 1879, in honor of St. Elizabeths Hospital Superintendent Charles Henry Nichols. It was renamed again for slain civil rights leader Martin Luther King, Jr. on January 15, 1971.

In 2003, the District of Columbia Department of Transportation (DDOT) announced that, as part of its DC Streetcar system, it would build a 2.7 miles (4.3 km) "Anacostia Line" as a demonstration of streetcar technology in the city. The line was planned to begin at Bolling Air Force Base, travel up north along South Capitol Street to the Anacostia Metro station, along Martin Luther King Jr. Avenue SE to Good Hope Road SE, and then along the CSX railroad tracks to the Minnesota Avenue Metro station. However, in October 2010 the city scaled back the Anacostia Line, truncating the northern end of the line so that it would only end at the Anacostia Metro station.

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