I-90 Overpass – Snoqualmie, WA
Highway Bridge Truck Impact Evaluation
On May 3, 2011, the bridge located at Milepost 25 of Interstate 90 was impacted by a truck towing a disabled dump truck with an attached dump trailer. The bridge is a multi-span concrete bridge that crosses over the eastbound lanes of State Highway 18. The impact damaged several of the concrete girders. We were retained by Zurich North America to review and analyze the bridge damage, provide repair recommendations, repair methods, and estimate the repair cost.