Federal Triangle

The Federal Triangle is a triangular area in Washington, D.C. formed by 15th Street NW, Constitution Avenue NW, Pennsylvania Avenue NW, and E Street NW. Federal Triangle is occupied by 10 large city and federal office buildings, all of which are part of the Pennsylvania Avenue National Historic Site. Seven of the buildings in Federal Triangle were built by the U.S. federal government in the early and mid-1930s as part of a coordinated construction plan that has been called "one of the greatest building projects ever undertaken" and all seven buildings are now designated as architecturally historic. The Federal Triangle Washington Metro station serves Federal Triangle and the surrounding area.

Name

The name "Federal Triangle" appears to have been a journalistic invention. The press made reference to a "Pennsylvania Avenue Triangle" as early as November 18, 1926, and use of this name continued as late as June 1929, but it was more common for the news media to refer to the area as "the Triangle" by 1927. This name was in use by 1928, even by government officials, and still used as of late 1934.

Federal Triangle station

Federal Triangle is an island platformed Washington Metro station in Downtown Washington, D.C., United States. The station was opened on July 1, 1977, and is operated by the Washington Metropolitan Area Transit Authority (WMATA). Providing service for the Blue, Orange, and Silver Lines, the station's entrance is beneath the William Jefferson Clinton Federal Building. On January 13, 1982, an eastbound Metro train on the Orange Line derailed just east of the station resulting in three fatalities, the first fatalities in the system's history.

The station opened on July 1, 1977. Its opening coincided with the completion of 11.8 miles (19.0 km) of rail between National Airport and RFK Stadium and the opening of the Arlington Cemetery, Capitol South, Crystal City, Eastern Market, Farragut West, Federal Center SW, Foggy Bottom–GWU, L'Enfant Plaza, McPherson Square, National Airport, Pentagon, Pentagon City, Potomac Avenue, Rosslyn, Smithsonian and Stadium–Armory stations. Orange Line service to the station began upon the line's opening on November 20, 1978. Silver Line service at Federal Triangle began on July 26, 2014.