31st Street Bridge
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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 structural load, loads partially into a horizontal thrust restrained by the abutments at either si ...
that carries vehicular traffic across the
Allegheny River The Allegheny River ( ; ; ) is a tributary of the Ohio River that is located in western Pennsylvania and New York (state), New York in the United States. It runs from its headwaters just below the middle of Pennsylvania's northern border, nor ...
between the
Pittsburgh Pittsburgh ( ) is a city in Allegheny County, Pennsylvania, United States, and its county seat. It is the List of municipalities in Pennsylvania#Municipalities, second-most populous city in Pennsylvania (after Philadelphia) and the List of Un ...
neighborhoods of Troy Hill and the Strip District. The bridge passes over but does not serve Washington's Landing, which is connected to the mainland by the 30th Street Bridge. Sidewalks along the bridge feature viewing platforms.


History

This first documented bridge was built in 1887 and was destroyed by fire on July 8, 1921. The 1887 bridge replaced a two-span iron truss destroyed by a flood in 1882. The bridge was built in 1927–1928 to replace an earlier through truss bridge aligned with 30th Street. A cable suspension footbridge was provided as a crossing while 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 with explosives on August 16, 2012, this was done in order to rebuild the segment to allow for the implementation of improvements to Route 28. Work on the reconstruction was completed by September 2012. 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.


See also

* List of crossings of the Allegheny 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