Pennsylvania Avenue Bridge conveys Pennsylvania Avenue

Pennsylvania Avenue

Pennsylvania Avenue is a street in Washington, D.C. that joins the White House and the United States Capitol. Called "America's Main Street", it is the location of official parades and processions, as well as protest marches...

 across Rock Creek

Rock Creek (Potomac River)

Rock Creek is a free-flowing tributary of the Potomac River, which empties into the Atlantic Ocean via the Chesapeake Bay. The creek is long, with a drainage area of about...

 and the adjoining Rock Creek and Potomac Parkway

Rock Creek and Potomac Parkway

The Rock Creek and Potomac Parkway, often known simply as the Rock Creek Parkway, is a parkway maintained by the National Park Service as part of Rock Creek Park in Washington, D.C...

 between Georgetown

Georgetown, Washington, D.C.

Georgetown is a neighborhood located in northwest Washington, D.C., situated along the Potomac River. Founded in 1751, the port of Georgetown predated the establishment of the federal district and the City of Washington by 40 years...

 and Foggy Bottom

Foggy Bottom

Foggy Bottom is one of the oldest late 18th and 19th-century neighborhoods in Washington, D.C. The area is thought to have received the name because its riverside location made it susceptible to concentrations of fog and industrial smoke, an atmospheric trait that did not prevent the neighborhood...

 in Northwest

Washington, D.C. (northwest)

Northwest is the northwestern quadrant of Washington, D.C., the capital of the United States, and is located north of the National Mall and west of North Capitol Street...

 Washington, D.C.

Washington, D.C.

Washington, D.C., formally the District of Columbia and commonly referred to as Washington, "the District", or simply D.C., is the capital of the United States. On July 16, 1790, the United States Congress approved the creation of a permanent national capital as permitted by the U.S. Constitution....

 Once Pennsylvania Avenue crosses Rock Creek, it terminates at M Street

M Street (Washington, D.C.)

The name "M Street" refers to two major roads in the United States capital of Washington, D.C. Because of the Cartesian-coordinate-based street-naming system in Washington, the name M Street can be used to refer to any east-west street located twelve blocks north or south of the dome of the United...

.

The bridge was constructed of large cast iron pipes by the Army Corps of Engineers in 1856. The original bridge was encased in cement in 1916.

The bridge once carried both the Pennsylvania Avenue streetcar line

Pennsylvania Avenue Line (Washington)

The Pennsylvania Avenue Line, served by Routes 32 and 36 is a Metrobus bus route in Washington, D.C., United States...

 and the Washington Aqueduct

Washington Aqueduct

The Washington Aqueduct is an aqueduct that provides the public water supply system serving Washington, D.C., and parts of its suburbs. One of the first major aqueduct projects in the United States, the Aqueduct was commissioned by Congress in 1852, and construction began in 1853 under the...

across Rock Creek.