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7th Avenue Bridge

7th Avenue Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: July 2, 2014

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Key Facts

Facility Carried / Feature Intersected
7th Avenue Over Bull Creek
Location
Tarentum: Allegheny County, Pennsylvania: United States
Structure Type
Stone Semicircular Deck Arch, Fixed
Construction Date and Builder / Engineer
1895 By Builder/Contractor: Unknown

Technical Facts

Rehabilitation Date
1970
Main Span Length
40 Feet (12.2 Meters)
Structure Length
40 Feet (12.2 Meters)
Roadway Width
40 Feet (12.19 Meters)
Spans
1 Main Span(s)
NBI Number
1374

Historic Significance Rating (HSR)
View Information About HSR Ratings

Bridge Documentation

This is a decent sized single span stone arch bridge.

View Archived National Bridge Inventory Report - Has Additional Details and Evaluation

Information and Findings From Pennsylvania's Historic Bridge Inventory

Discussion of Bridge

The 1895, single span, 40' long, stone arch bridge was built by the county in 1895, but it was widened ca. 1970 when reinforced concrete brackets were attached to the spandrel walls, and cantilevered deck sections were placed. They are sidewalks and are finished with modern steel railings. The bridge was originally laid up in ashlar masonry, and it has long wingwalls. Allegheny County erected 12 stone arch bridges between 1889 and 1905 and 8 to 10 survive. This is an altered example, and it is neither historically nor technologically significant. Earlier and more complete examples represent the bridge type in the county context (see 02 7427 0000 2814).

Discussion of Surrounding Area

The bridge carries a 3 lane street with 2 sidewalks over a stream in an area dominated by undistinguished post-World War II strip commercial development, including 2 automobile dealerships west of the bridge. The bridge is separated from the older commercial area of Tarentum by SR 366, a four lane highway. The bridge is not located in a potential historic district.

Bridge Considered Historic By Survey: No

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Photo Galleries and Videos: 7th Avenue Bridge

 
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A collection of overview and detail photos. This gallery features data-friendly, fast-loading photos in a touch-friendly popup viewer. Alternatively, Browse Without Using Viewer

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Maps and Links: 7th Avenue Bridge

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