Key Bridge (Washington, D.C.)

The Francis Scott Key Bridge, more commonly known as the Key Bridge, is a six-lane reinforced concrete arch bridge carrying U.S. Route 29 (US 29) across the Potomac River between the Rosslyn neighborhood of Arlington County, Virginia, and the Georgetown neighborhood of Washington, D.C. Completed in 1923, it is Washington's oldest surviving road bridge across the Potomac River.

Key Bridge
Coordinates38°54′08″N 77°04′11″W
Characteristics
Clearance below60 feet (18 m)
Key Bridge
U.S. National Register of Historic Places
Virginia Landmarks Register
Location US 29 over the Potomac River between Rosslyn, Virginia, and Georgetown, Washington, D.C.
Coordinates38°54′8″N 77°4′13″W
Built1923
ArchitectNathan C. Wyeth
Max C. Tyler
Architectural styleClassical Revival arch bridge
518.5 meters (1,701 ft) long
NRHP reference No.96000199
VLR No.DC Local
Significant dates
Added to NRHPMarch 1, 1996
Designated DCIHSNovember 8, 1964
Designated VLROctober 18, 1995
Location

Key Bridge was named for the poet Francis Scott Key, who wrote the words of the American national anthem "The Star-Spangled Banner". It was added to the National Register of Historic Places in 1996. It shared a name with a continuous truss bridge in Baltimore, Maryland, which collapsed in 2024.

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