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Green Valley Road Bridge

Brown County Bridge 33

Green Valley Road Bridge

Primary Photographer(s): Nathan Holth and Rick McOmber

Bridge Documented: September 23, 2012

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Key Facts

Facility Carried / Feature Intersected
Green Valley Road Over North Fork Salt Creek
Location
Rural: Brown County, Indiana: United States
Construction Date and Builder / Engineer
1915 By Builder/Contractor: Unknown

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
88 Feet (26.82 Meters)
Structure Length
91.5 Feet (27.89 Meters)
Roadway Width
15.7 Feet (4.79 Meters)
Spans
1 Main Span(s)
NBI Number
700025

Historic Significance Rating (HSR)

Bridge Documentation

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

This bridge has an unusual shape and appearance due to the configuration of its panels. If it were a Pratt, it would be a Camelback truss with five slopes. The bridge is also unusual because its connections are bolted, rather than riveted as was more common at the time this bridge was built.

Information and Findings From DHPA Historic Bridge Survey

Statement of Significance

Unusual as a form of the Warren pony, this bridge is rare for the parallel elements of the chords and atypical for the use of bolts and the integration of the verticals with the sway braces. The structure retains its original members, including the latticed guardrails. At 18', the panels of this bridge are tied for the widest on a Warren polygonal chord pony.

Architectural Description

The designers of this single-span Warren pony truss used a polygonal top chord. Parallel with the lower chord in the two most central panels, the top chord slopes once in each direction before meeting the endposts. Seated upon concrete abutments and wingwalls, the largely-bolted structure extends 90' in five panels. Its all-interior verticals and external sway braces are combined into a single member, using pairs of angles riveted together with stay plates. The diagonals are manufactured from a pair of angles (lighter ones toward midspan) riveted together with stay plates. The I floor beams are attached to gussets at the lower chord and carry the 14'9" concrete deck.

Bridge Considered Historic By Survey: Yes

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Photo Galleries and Videos: Green Valley Road Bridge

 
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Bridge Photo-Documentation
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Westbound Crossing
Full Motion Video
Streaming video of the bridge. Also includes a higher quality downloadable video for greater clarity or offline viewing.
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Eastbound Crossing
Full Motion Video
Streaming video of the bridge. Also includes a higher quality downloadable video for greater clarity or offline viewing.
View Video
Westbound Crossing
Full Motion Video
Streaming video of the bridge. Also includes a higher quality downloadable video for greater clarity or offline viewing.

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