The William Raymond Prom Memorial Bridge, commonly known as the 31st Street Bridge, is an

arch bridge An arch bridge is a bridge with abutments at each end shaped as a curved arch. Arch bridges work by transferring the weight of the bridge and its loads partially into a horizontal thrust restrained by the abutments at either side. A viaduct ...

that carries vehicular traffic across the

Allegheny River The Allegheny River ( ) is a long headwater stream of the Ohio River in western Pennsylvania and New York (state), New York. The Allegheny River runs from its headwaters just below the middle of Pennsylvania's northern border northwesterly into ...

between the

Pittsburgh Pittsburgh ( ) is a city in the Commonwealth (U.S. state), Commonwealth of Pennsylvania, United States, and the county seat of Allegheny County, Pennsylvania, Allegheny County. It is the most populous city in both Allegheny County and Wester ...

neighborhoods of Troy Hill and the Strip District. The bridge passes over, but does not serve,

Washington's Landing Herrs Island, also known as Washington's Landing, is an island in the Allegheny River in Pittsburgh in the U.S. state of Pennsylvania. It is officially considered part of the Troy Hill neighborhood. Rehabilitation As a result of the industrial ...

, which is connected to the mainland by the

30th Street Bridge The 30th Street Bridge, is a girder bridge that carries vehicular traffic across the Allegheny River between the Pittsburgh neighborhoods of Troy Hill and Herrs Island (known by the moniker of Washington's Landing). This is the fourth bridge ...

. Sidewalks along the bridge feature viewing platforms.

History

The bridge was built in 1927–1928 to replace an earlier through truss bridge aligned with 30th Street. This earlier bridge was built in 1887 but was destroyed by fire on July 8, 1921. The 1887 bridge itself replaced a two span iron truss which was destroyed by a flood in 1882. A cable suspension footbridge was provided as a crossing whilst the new 31st Street bridge was being constructed. The bridge was due to close on Tuesday January 31, 2006 for a proposed $27 million refurbishment which would take two years. It eventually closed on February 14, 2006 and reopened by Mayor Luke Ravenstahl on November 21, 2007. The portion of the bridge over the river's back channel was demolished on August 16, 2012 as part of improvements on adjacent Route 28. The bridge was renamed in 2013, from its former name of ''Thirty-First Street Bridge, Number Six Allegheny River'' to ''William Raymond Prom Memorial Bridge'', to honor William R. Prom, who was killed in Vietnam. File:31st Street Bridge (Pittsburgh).jpg, Bridge supports from the river.

References

External links

* Bridges over the Allegheny River Bridges completed in 1928 Road bridges in Pennsylvania 1928 establishments in Pennsylvania Open-spandrel deck arch bridges in the United States Bridges in Pittsburgh {{Pittsburgh-struct-stub

History

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References

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