I-5 Skagit River Bridge Project - Visualizing the Construction Process

In May 2013, a tractor-trailer carrying an oversized load struck the upper corner of the overhead steel frame of the Interstate 5 Skagit River Bridge, a 58-year-old bridge that serves as a key link between Seattle, Washington, and Vancouver, British Columbia. The collision caused a 160-foot (49-meter) span of the structure to collapse into the Skagit River. There were no serious injuries to the traveling public. The bridge, which carried 70,000 motorists per day, spans an essential corridor for regional a