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Darr Road South Branch Bridge

Darr Road South Branch Bridge

Primary Photographer(s): Randy Mulder

Bridge Documented: May 15, 2010

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Key Facts

Facility Carried / Feature Intersected
Darr Road Over South Branch Lincoln River
Rural: Mason County, Michigan: United States
Construction Date and Builder / Engineer
By Builder/Contractor: Unknown

Technical Facts

Rehabilitation Date
Main Span Length
26 Feet (7.9 Meters)
Structure Length
26 Feet (7.9 Meters)
Roadway Width
15.4 Feet (4.69 Meters)
1 Main Span(s)
NBI Number

Historic Significance Rating (HSR)
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Bridge Documentation

This bridge no longer exists!

Bridge Status: This bridge was demolished and replaced in 2018.

This bridge is an early (the bridge stylistically dates to roughly between 1910-1925) example of a truss bridge that uses bolts instead of rivets for all connections, and it is one of the only examples of a historic truss bridge with bolted connections in the entire state of Michigan, along with the other two truss bridges in Mason County. The bridge is also noteworthy for being one of the shortest trusses in Michigan. As a two panel Pratt, it also displays the smallest number of panels that a Pratt truss can have.

It is unclear why Mason County has three truss bridges with bolted connections while elsewhere in the state this design is nearly unheard of. Unfortunately, the bridge has been altered. The top chord and end post was insensitively repaired (presumably in the 1976 rehabilitation referenced in the bridge inventory) when new plate was welded directly on top of the original cover plate, with the top half of the rivets for the original cover plate being removed. In addition to reducing the historic integrity of the bridge, the plain, flat, rivet-less appearance of the top of these beams has reduced the historic feel and aesthetic qualities of the bridge.

 The bridge is in a condition where rehabilitation and preservation should be feasible.


Photo Galleries and Videos: Darr Road South Branch Bridge

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Maps and Links: Darr Road South Branch Bridge

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

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