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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 (4th Street) Over Driftwood Branch Sinnemahoning Creek
Location
Emporium: Cameron County, Pennsylvania: United States
Construction Date and Builder / Engineer
1930 By Builder/Contractor: Central Pennsylvania Construction Company and Engineer/Design: Pennsylvania State Highway Department

Technical Facts

Rehabilitation Date
2011
Main Span Length
136 Feet (41.5 Meters)
Structure Length
138 Feet (42.1 Meters)
Roadway Width
26.6 Feet (8.11 Meters)
Spans
1 Main Span(s)
NBI Number
8843

Historic Significance Rating (HSR)
View Information About HSR Ratings

Bridge Documentation

This bridge is a rare surviving example of an earlier state standard through truss bridge in Pennsylvania.

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

Information and Findings From Pennsylvania's Historic Bridge Inventory

Discussion of Bridge

The 1930, single span, 138'-long, rivet-connected Parker thru truss bridge is supported on concrete abutments with wingwalls. The upper chords are built up box sections; the lower chord, verticals, and diagonals are rolled sections. Rolled floorbeams support stringers and a stay-in-place deck with safety-shape parapets inside of the truss lines, placed in 1981. Also in 1981, the portal bracing was modified to provide greater vertical clearance. The bridge is an example of a state highway department standardized rivet-connected thru truss bridge with rolled verticals and diagonals. The design was used with great frequency beginning in the mid 1920s. The bridge has no innovative or distinctive details. Approximately 75 riveted Parker truss bridges built between 1925 and 1957 remain statewide. Neither the bridge nor its setting is historically or technologically significant.

Discussion of Surrounding Area

The bridge carries a 2 lane road and sidewalk over a stream in a mixed area of undistinguished, early to late 20th century vernacular and post-WW II commercial buildings. The intersection with SR 46 is at the northeast approach. The setting 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

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