B & O Railroad Potomac River Crossing

B & O Railroad Potomac River Crossing
From left to right: Stone piers from 1851 at Bollman Truss Railroad Bridge; the bridge in 1894; and the bridge in 1931
LocationHarper's Ferry, West Virginia, U.S.
Coordinates39°19′27″N 77°43′43″W / 39.32417°N 77.72861°W / 39.32417; -77.72861
Area15 acres (6.1 ha)
Built1837
ArchitectWendel Bollman
Demolished1936 (flood)
NRHP reference No.78001484
Added to NRHPFebruary 14, 1978

The B & O Railroad Potomac River Crossing is a 15-acre (6.1 ha) historic site where a set of railroad bridges, originally built by the Baltimore and Ohio Railroad, span the Potomac River between Sandy Hook, Maryland and Harpers Ferry, West Virginia. The site was added to the National Register of Historic Places on February 14, 1978, for its significance in commerce, engineering, industry, invention, and transportation.