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PA-120 Bridge

PA-120 Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: May 22, 2021

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Key Facts

Facility Carried / Feature Intersected
PA-120 (Allegany Avenue) Over Sinnemahoning Portage Creek
Location
Emporium: Cameron County, Pennsylvania: United States
Construction Date and Builder / Engineer
1933 By Builder/Contractor: Welch Construction Company and Engineer/Design: Pennsylvania State Highway Department

Technical Facts

Rehabilitation Date
2011
Main Span Length
112 Feet (34.1 Meters)
Structure Length
116 Feet (35.4 Meters)
Roadway Width
32.2 Feet (9.81 Meters)
Spans
1 Main Span(s)
NBI Number
8844

Historic Significance Rating (HSR)
View Information About HSR Ratings

Bridge Documentation

This bridge is an increasingly rare example of a state standard pony truss that has been rehabilitated rather than demolished. The bridge has extremely rare Weirton Steel brands on it in addition to Carnegie Steel.

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

Information and Findings From Pennsylvania's Historic Bridge Inventory

Discussion of Bridge

The 1933, single span, 116'-long, rivet-connected Parker pony truss bridge is supported on concrete abutments with wingwalls. The upper chords are built up box sections, the lower chords are channels with battens, and the verticals and diagonals are rolled sections. The bridge is an example of a state highway department standard design rivet-connected truss bridge that was used with great frequency beginning in the mid 1920s. It has no innovative or distinctive details. Approximately 75 riveted Parker truss highway bridges built between 1925 and 1957 have been identified. Neither the bridge nor its setting is historically or technologically significant.

Discussion of Surrounding Area

The bridge carries a 2 lane road with sidewalks over a stream in an area dominated by late 20th century commercial strip development. There is also a modern industrial plant at the southeast quadrant. The area does not have historic district potential.

Bridge Considered Historic By Survey: No

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Photo Galleries and Videos: PA-120 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: PA-120 Bridge

Coordinates (Latitude, Longitude):

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