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Climax Bridge

Climax Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: July 1, 2006

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Key Facts

Facility Carried / Feature Intersected
Tunnel Road Over Redbank Creek
Climax (Rural): Armstrong County, Pennsylvania and Clarion County, Pennsylvania: United States
Construction Date and Builder / Engineer
1898 By Builder/Contractor: Unknown

Technical Facts

Rehabilitation Date
Main Span Length
101 Feet (30.8 Meters)
Structure Length
258 Feet (78.6 Meters)
Roadway Width
11.2 Feet (3.41 Meters)
3 Main Span(s)
NBI Number

Historic Significance Rating (HSR)
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Bridge Documentation

This bridge no longer exists!

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

This historic bridge was demolished and replaced in 2009!

This impressive deck truss is an unusual sight, as deck trusses themselves are uncommon, and even less common on highways. The bridge's truss configuration is Warren with verticals. Connections are riveted. The bridge is noted also for its unusual built-up steel bents which extend down halfway to the water, and are themselves sitting on stone piers.

The Historic Bridge Inventory thinks the bridge was once a railroad bridge, which explains the unusual design. While not as massive as most rail bridges, the statement is believable, as there is a rail-line near the bridge. The rail line is also worth mentioning because there is a beautiful stone arch tunnel on the north side of this bridge. This tunnel was pointed right toward the bridge moreso than the current curved alignment of the tracks to the tunnel, additional evidence that there was indeed a set of tracks crossing the river via this bridge. The inventory also mentions that there was once a brick yard to the south of the bridge.

This bridge has been heavily modified, although the Historic Bridge Inventory makes it sound worse than it is. Their assessment that a bridge as unusual as this one is rendered insignificant just because somebody modified some parts of it is outdated. The majority of the original materials of the bridge remain. There is still extensive v-lacing and riveting present on this bridge, and it retains its overall design scheme and appearance. It is a significant example of a deck truss bridge, which is a less common truss type.

Information and Findings From Pennsylvania's Historic Bridge Inventory

Discussion of Bridge

The 3 span, 258'-long, Warren deck truss bridge is supported on ashlar abutments and piers. The bridge was built ca. 1898, and its design and narrow width indicate that it was originally a railroad facility. There are no floor beams at the panel points, as in a conventional truss. There are cross beams spaced close together bearing on the top chord. In 1974 it was extensively rebuilt. The original deck and railings were replaced with an open grid deck and beam guide rail railings. New upper chord box sections with welded connections were built around the original upper chords, and the lower chords were replaced in kind but with welded connections. Many of the diagonals and verticals have welded repairs, and rivets have been replaced with high strength bolts. The bridge is too altered to be historically or technologically significant.

Discussion of Surrounding Area

The bridge carries a single lane of a township road over a stream in a sparsely developed, wooded setting. South of the bridge are the ruins of a former brick yard. Two small ovens remain.

Bridge Considered Historic By Survey: No


Photo Galleries and Videos: Climax Bridge

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Maps and Links: Climax Bridge

This historic bridge has been demolished. This map is shown for reference purposes only.

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