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Clarion Avenue Bridge

Clarion Avenue Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: March 22, 2012

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Key Facts

Facility Carried / Feature Intersected
Clarion Avenue (1st Avenue) Over East Branch Clarion River
Location
Johnsonburg: Elk County, Pennsylvania: United States
Construction Date and Builder / Engineer
1930 By Builder/Contractor: Unknown and Engineer/Design: Pennsylvania State Highway Department

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
125 Feet (38 Meters)
Structure Length
125 Feet (38 Meters)
Roadway Width
12 Feet (3.66 Meters)
Spans
1 Main Span(s)
NBI Number
24740103180005

Historic Significance Rating (HSR)

Bridge Documentation

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

This bridge is an example of a pony truss in Pennsylvania built to a state standard plan. The bridge is closed to traffic and completely fenced off. It appears to have led into an area which is now completely private property. The bridge no longer appears on the National Bridge Inventory, and so the bridge itself may be privately owned. Although the Historic Bridge Inventory quickly dismissed the bridge as not noteworthy, HistoricBridges.org observes that this bridge exhibits one of the longest pony truss spans in the state. Most state standard plan truss bridges of this design in Pennsylvania appear to be between 90 and 120 feet long. With a 125 foot span, this bridge stands out as a significant example of state standard truss bridge construction.

Information and Findings From Pennsylvania's Historic Bridge Inventory

Discussion of Bridge

The skewed, single span, 125'-long, rivet-connected Parker pony truss bridge is supported on concrete pargetted stone abutments with ashlar wingwalls. The top and bottom chords are built-up members, and the verticals and diagonals are rolled I beam sections. The bridge is an example of a state highway department standard design that was used with great frequency beginning in the mid 1920s. It has no innovative or distinctive details. More than 90 Parker truss bridges built after 1925 remain statewide. The bridge is not historically or technologically distinguished by its setting or context.

Discussion of Surrounding Area

The bridge carries a single lane of traffic and a sidewalk over a stream in a modern industrial setting adjacent to a paper mill on the outskirts of Johnsonburg borough. The mill is dominated by late-20th-century processing buildings. The setting does not have historic district potential. The bridge is not within the boundaries of the potential downtown Johnsonburg Historic District identified by PHMC (DOE 4/2/1998).

Bridge Considered Historic By Survey: No

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Photo Galleries and Videos: Clarion Avenue Bridge

 
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A collection of overview and detail photos. This gallery offers photos in the highest available resolution and file size in a touch-friendly popup viewer. Alternatively, Browse Without Using Viewer
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Bridge Photo-Documentation
Mobile Optimized Photos
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: Clarion Avenue Bridge

Coordinates (Latitude, Longitude):
41.494070,-78.672560

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