Region: Auburn Hills
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I-75 University Drive DDI
Our firm designed Michigan’s first Diverging Diamond Interchange (DDI), a landmark structure spanning I-75 in Auburn Hills. The innovative two-span bridge features prestressed concrete bulb-tee girders supported by integral abutments behind MSE walls and a cap-and-column pier in the median. As part of an advanced Design-Build project, the team proposed an Alternative Technical Concept that…