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Clarksville Bridge

Clarksville Bridge

Primary Photographer(s): Nathan Holth and Rick McOmber

Bridge Documented: July 10, 2009

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Key Facts

Facility Carried / Feature Intersected
Center Street (PA-1001) Over Tenmile Creek
Clarksville: Greene County, Pennsylvania: United States
Structure Type
Metal 9 Panel Rivet-Connected Pratt Pony Truss, Fixed and Approach Spans: Metal Through Girder, Fixed
Construction Date and Builder / Engineer
By Builder/Contractor: Unknown

Technical Facts

Rehabilitation Date
Main Span Length
83 Feet (25.3 Meters)
Structure Length
151 Feet (46 Meters)
Roadway Width
24 Feet (7.32 Meters)
1 Main Span(s) and 1 Approach Span(s)
NBI Number

Historic Significance Rating (HSR)
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Bridge Documentation

This bridge's future is at risk!

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

This bridge's unusual plate-like trusses give the bridge away as a bridge that used to carry or cross a railroad line. Railroads had a habit of occasionally designing truss bridges with members that have a flat plate-like quality to them. This bridge is very plate line, and indeed the diagonal members on this bridge are plates. This design is unusual because it is one that was only used by the railroads and even there only occasionally. The design of this bridge is similar to a railroad bridge in Michigan.

The bridge also features through plate girder approach spans.

The historic bridge inventory below seems ignorant to the above facts and as such, HistoricBridges.org disagrees with the below non-historic determination. However, HistoricBridges.org does agree with their comments that this bridge may date to the late 1800s. The railroad bridges built rigid rivet-connected truss bridges at an earlier date than highway bridge builders.

Information and Findings From Pennsylvania's Historic Bridge Inventory

Discussion of Bridge

The skewed, 2 span, 151' long and 29.5' wide bridge consists of a thru girder main span over the channel and a Pratt truss approach span. The bridge is dated 1944, and the truss is an older span that was relocated and cut down considerably to fit (cut marks are visible on one end). It could date to the late 19th century and have been a rail-carrying facility. It is ill proportioned for its length because it was originally a much longer and thus necessarily deeper, span. Its original location is not known. A pedestrian sidewalk with a 3 high welded metal channel railing is cantilevered off the upstream elevation. The substructure consists of concrete abutments with wingwalls and a concrete pier. The safety shape barriers were placed in 1983. The bridge is not historically or technologically significant.

Discussion of Surrounding Area

The bridge carries a 2 lane street over a stream in Clarksville. East of the bridge is an area of altered early to mid 20th century vernacular housing. West of the bridge the housing appears to thin out to scattered, predominantly post-World War II residences. The area does not appear to have historic district potential.

Bridge Considered Historic By Survey: No


Photo Galleries and Videos: Clarksville Bridge

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Maps and Links: Clarksville Bridge

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