"The Old US-131 Bridge is constructed of reinforced concrete with four spans supported by three solid concrete counterfort piers. At the north and south approaches are reinforced concrete abutments. The four bridge spans measure 85.12 meters (280 feet) in length and 9.12 meters (30 feet) in width. Narrow concrete walkways are located on either side of the roadway and extend the length of the bridge. Each of the four spans measures 21.28 meters (70 feet). The north and south concrete approach abutments are 4.71 meters (15.5 feet) in length. The total length of the bridge inclusind the two end abutments is 94.54 meters (311) feet."The bridge was constructed using standardized bridge plans developed by the Michigan State Highway Department. The bridge's 4 spans make it one of the longest surviving steel multi-girder bridges still retaining its original concrete balustrade.
"Irene Jackson and William Henry, Henry and Henry Preservation and Architectural Consultants, July 1996"
Historic American Engineering Record
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