Here's how extreme heat affects Chicago's moveable bridges

On Wednesday, two Chicago bridges got stuck in a raised position due to severe heat. The stuck bridges caused hours of disruptions and traffic jams. The DuSable Lake Shore Drive bridge was stuck for more than four hours after a routine lift around 10 a.m. to let a yacht pass. Crews spent hours trying to close the bridge completely. A Chicago Fire Department boat sprayed water to cool it down on Wednesday, which was Chicago’s second day under a heat advisory. Then at 4:30 p.m., the Torrence…