What Happened to the FIU Pedestrian Bridge?

On March 15, 2018, a tragic accident occurred near the campus of Florida International University (FIU) in Miami, Florida. A 174-foot-long, 950-ton pedestrian bridge that was under construction collapsed onto a busy highway, killing six people and injuring ten others. The bridge was designed to connect the university with the nearby city of Sweetwater, where many students lived and worked. It was also part of a larger project to improve the safety and mobility of pedestrians and cyclists in the area. But what went wrong? How did a bridge that was supposed to be innovative and resilient end up crashing down in a matter of seconds? And what lessons can we learn from this engineering disaster?