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Foster City Road Camelback Bridge

Foster City Road Camelback Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: October 1, 2012

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Key Facts

Facility Carried / Feature Intersected
Foster City Road (CR-569) Over Sturgeon River
Location
Rural: Dickinson County, Michigan: United States
Construction Date and Builder / Engineer
1923 By Builder/Contractor: David Graham of Minnesota and Engineer/Design: Michigan State Highway Department

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
72 Feet (21.9 Meters)
Structure Length
75 Feet (22.9 Meters)
Roadway Width
22 Feet (6.71 Meters)
Spans
1 Main Span(s)
NBI Number
2193

Historic Significance Rating (HSR)
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Bridge Documentation

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

Learn about Michigan's Unique Concrete Camelback Bridges

This bridge is one of the least deteriorated of Michigan's surviving concrete camelback bridges. Because of the difficulty of rehabilitating concrete bridges, as well as the loss of architectural details that accompanies deterioration, those bridges that lack deterioration should be given the highest preservation priority, and also considered the most historically significant. With a 75 foot length, this bridge is among the few surviving examples of its size, and it displays the additional architectural details found in concrete camelback bridges over 60 foot in length.

An oddity of this bridge is the contractor's city has been carefully scraped off of the plaque, but the state left in place. Could this be an original detail, where the plaque was cast with the incorrect city?

Information and Findings From Michigan Historic Bridge Inventory

Narrative Description

This is the oldest known surviving example of a standard Michigan State Highway Department concrete camelback bridge of 75 feet. Michigan's Highway Department developed standard designs in the late 1910s as a way of producing inexpensive bridges for the State Trunkline System, and was a national leader in doing so. David Graham of Minnesota was the contractor for this bridge.

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Photo Galleries and Videos: Foster City Road Camelback Bridge

 
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Maps and Links: Foster City Road Camelback Bridge

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