Problem The Sault Sainte Marie International Bridge is a 2.8-mile bridge built in the early 1960s that connects the twin cities of Sault Sainte Marie in Michigan and Ontario. The bridge is operated by the International Bridge Administration (IBA), and the IBA scheduled repairs for the aging structure in the summer of 2018. One area of focus was the bridge’s abutments. “The best description is that the abutments were slowly ‘leaking’ sand,” said IBA General Manager Peter Petainen. This “leak” was a result of the natural settling of soils in and around the abutments over the bridge’s lifetime, and while not unexpected considering the bridge’s age, the IBA decided to perform repairs on the abutments to prevent the situation from worsening. They hired URETEK and Poly-Mor Canada to complet

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