File:CONSTRUCTION OF THE MAIN SPAN, LOOKING WEST - West End-North Side Bridge, Spanning Ohio River, Approximately 1 Mile Downstream From Confluence Of Monongahela And Allegheny HAER PA,2-PITBU.V,3-35.tif
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Notes
References
Source
https://www.loc.gov/pictures/item/pa1732.photos.133169p
Permission
(Reusing this file)
- Photographs cover approach spans only; Ohio River span not shown.
- Significance: After two decades of agitation by the local business community, the West End-North Side Bridge was completed in 1932 by the American Bridge Company under contract to Allegheny County. The main span is a graceful, 778-foot long, tied-arch structure which employed pre-stressed hangers between the twin arches and the bottom chords. This bridge was placed on the National Register of Historic Places in 1979 for the engineering and aesthetic qualities of the main span. Approaches to the high level main span are by three pony trusses on the south and four pony trusses on the north.
- Survey number: HAER PA-96
- Building/structure dates: 1931- 1932 Initial Construction
- Building/structure dates: 1948 Subsequent Work
- Building/structure dates: 1955 Subsequent Work
- Building/structure dates: 1958 Subsequent Work
- Building/structure dates: 1977 Subsequent Work
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This is an image of a place or building that is listed on the National Register of Historic Places in the United States of America. Its reference number is 79003143. |
(Reusing this file)
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This image or media file contains material based on a work of a National Park Service employee, created as part of that person's official duties. As a work of the U.S. federal government, such work is in the public domain in the United States. See the NPS website and NPS copyright policy for more information. | ![]() |
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