14th Street NW

Fourteenth Street Historic District
U.S. National Register of Historic Places
U.S. Historic district
The corner of 14th Street NW and Pennsylvania Avenue in 1942
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Location	Roughly bounded by S, 12th, N and 15th Sts., NW., Washington, District of Columbia
Area	105 acres (42 ha)
Architect	Brown, Glenn, et al.
Architectural style	Mid 19th Century Revival, Late Victorian, Modern Movement
NRHP reference #	94000992
Added to NRHP	November 9, 1994

14th Street NW/SW is a street in Northwest and Southwest quadrants of Washington, D.C., located 1.25 miles (2.01 km) west of the U.S. Capitol. It runs from the 14th Street Bridge north to Eastern Avenue.

Northbound U.S. Route 1 runs along 14th Street from the bridge to Constitution Avenue, where it turns east with US 50. US 1 southbound previously used 15th Street NW due to the ban on left turns from westbound Constitution Avenue to 14th Street, but it now uses the Ninth Street Tunnel, five blocks to the east. 14th Street crosses the National Mall and runs near the White House and through the western side of Washington's Logan Circle neighborhood.

Because it connects to one of the main bridges crossing the Potomac River into Virginia, 14th Street has always been a major transportation corridor. It was the location of one of the first streetcar lines, and today it is the location of several afternoon carpooling "slug lines", which allow commuters to meet the high-occupancy vehicle requirements of I-395, the Henry G. Shirley Memorial Highway.