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Pennsylvania Avenue Bridge conveys Pennsylvania Avenue across Rock Creek and the adjoining Rock Creek and Potomac Parkway between Georgetown and Foggy Bottom in Northwest Washington, D.C. Once Pennsylvania Avenue crosses Rock Creek, it terminates at M Street.
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 and the Washington Aqueduct across Rock Creek.
Coordinates: 38°54′17″N 77°03′22″W / 38.9046°N 77.056°W