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CR-600 Bridge

Madison County Bridge 170

CR-600 Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: February 19, 2017

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Key Facts

Facility Carried / Feature Intersected
CR-600S Over Fall Creek
Rural: Madison County, Indiana: United States
Construction Date and Builder / Engineer
1916 By Builder/Contractor: Elkhart Bridge and Iron Company of Elkhart, Indiana and Engineer/Design: Indiana State Highway Commission

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
140 Feet (42.7 Meters)
Structure Length
142 Feet (43.3 Meters)
Roadway Width
16 Feet (4.88 Meters)
1 Main Span(s)
NBI Number
Not Applicable

Historic Significance Rating (HSR)
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Bridge Documentation

This abandoned variation of a state standard pony truss has one of the greatest possible skews that is possible for a bridge. The skew is listed at an incredible 67 degrees! The end floorbeams do not even reach the opposite truss and instead rest on the abutments. This bridge is today bypassed and abandoned when a bridge was built on new alignment in 1997.

Information and Findings From DHPA Historic Bridge Survey

Statement of Significance

The Elkhart Bridge Company of Elkhart, Indiana, erected this structure. Concrete abutments and wingwalls support the one-span Warren pony truss. The riveted structure extends 142' in ten panels with the north truss offset three panels to the west. Its verticals and diagonals are manufactured from pairs of angles riveted to stay plates and reinforced with sway bracing. The I floor-beams are bolted to gussets and the verticals above the lower chord and carry the asphalt-over-timber deck with its 15'8" roadway. A prolific Indiana firm fabricated the longest extant span of its kind. Except for the skew, the design is standard. The structure retains its original members, including latticed guardrails. The Indiana Historical Society holds the plans for the bridge.

Other Information

References United Consulting Engineers, Inc., Bridge Inspection Study and Report: Madison County (Indianapolis, 1973); Bridge Reinspection Report: Madison County (Indianapolis, 1978). Elkhart Bridge & Iron Company, Drawings, D-591, Indiana Historical Society (Indianapolis). Engineering News, LXXXVI, 3 Aug. 1916, Construction News, 59.

Bridge Considered Historic By Survey: Yes


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