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Larimer Bridge

   


Larimer Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: June 3, 2012
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Key Facts

Facility Carried / Feature Intersected
Water Street (PA-993) Over Brush Creek
Location
Larimer: Westmoreland County, Pennsylvania
Construction Date and Builder / Engineer
1937 By Builder/Contractor: Unknown and Engineer/Design: Pennsylvania State Highway Department

Technical Facts

Rehabilitation Date
2010
Main Span Length
146 Feet (44.5 Meters)
Structure Length
147 Feet (44.8 Meters)
Roadway Width
21 Feet (6.4 Meters)
Spans
1 Main Span(s)
NBI Number
640993008000730

Historic Significance Rating (HSR)

Bridge Documentation

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

This bridge is a good example of a state standard truss bridge in Pennsylvania. It has a noteworthy skew. During a rehabilitation project, the bridge was repainted in 2010 in a vibrant yellow color, that makes this attractive bridge refuse to be ignored. The bridge had previously been painted light green/blue. One unfortunate loss during the 2010 rehab was the loss of original lattice railings on the single cantilevered sidewalk and along the roadway of the side of the truss that has no sidewalk. Concrete barriers were added to the bridge. The need for crash-tested barriers to protect the truss from vehicular damage is clear, however it would have been nice to retain the lattice railings as well, particularly on the sidewalk, where the tall lattice railings originally on the bridge provided a satisfactory level of safety and looked a lot nicer. However, at the same time in Pennsylvania, where bridges like this are usually bulldozed and sent to the nearest scrapyard, it needs to be recognized that this is a rare and pleasant exception where a truss bridge has been granted the rare gift of continued existence in Pennsylvania.

Information and Findings From Pennsylvania's Historic Bridge Inventory

Discussion of Bridge

The 1937, skewed, single span, 147' long and 52' wide, riveted, Pratt thru truss bridge is supported on ashlar abutments with wingwalls. The trusses are traditionally composed with built up box section upper chords and inclined end posts and rolled section for the web members. The original lattice railings remain in place. The bridge is neither historically nor technologically significant. It was built as part of the rebuilding effort following the devastating 1936 St. Patrick's Day flood when over 275 bridges, mostly in the western and central portions of Pennsylvania, were destroyed or damaged beyond repair. Following the flood, the department turned to established technologies like standard-design riveted steel truss bridges to replace lost spans.

Discussion of Surrounding Area

The bridge carries a 2 lane road with shoulders and a sidewalk over a stream in a sparsely developed, rural area with scattered 20th century residences. The area is dominated by post-World War II houses on the south side of Larimer.

Bridge Considered Historic By Survey: No

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