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US-23 Ocqueoc River Bridge

US-23 Ocqueoc River Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: May 16, 2006 and June 13, 2009

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Key Facts

Facility Carried / Feature Intersected
US-23 Over Ocqueoc River
Location
Rural: Presque Isle County, Michigan: United States
Construction Date and Builder / Engineer
1937 By Builder/Contractor: John W. Hertel and Engineer/Design: Michigan State Highway Department

Technical Facts

Rehabilitation Date
1994
Main Span Length
106 Feet (32.31 Meters)
Structure Length
106 Feet (32.31 Meters)
Roadway Width
35 Feet (10.67 Meters)
Spans
1 Main Span(s)
NBI Number
71171073000B020

Historic Significance Rating (HSR)

Bridge Documentation

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

There are very few deck truss bridges in Michigan, and even less highway deck truss bridges. This is one of those few, and it is an impressive structure, consisting of massive members, something nor seen on Michigan highways very often. It utilizes the Pratt truss configuration, and it has riveted connections. The deck is wider than the trusses, and this is accomplished by cantilevers. These cantilevers appear to be original, since they are riveted. In 1994, MDOT apparently recognized the need to not demolish this bridge (listed on the National Register of Historic Places) and they rehabilitated it. This appears to have included extensive abutment work and a redone deck. The original railing panels were remounted onto modern concrete posts with steel railings in front. There is no v-lacing on the structure, but lattice is present on the top and bottom of the upper and lower chords of the bridge. The bridge is an unusual place to find a deck truss since neither the total bridge length or span length is particularly long, nor is the roadway very high above the waterway it crosses. Deck trusses are usually reserved for longer spans, longer bridges, and particularly bridges where the roadway is high above the waterway. In the context of deck truss bridges, this is a very short bridge.

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