A pedestrian bridge under construction collapsed Thursday, just days after crews had dropped an elevated 950-ton span in place in a project that was intended to give Florida International University students a safe route across the busy roadway.  The bridge gave way suddenly while the traffic light for motorists on Tamiami Trail was red and the concrete span flattened a row of at least eight stopped

vehicles. Police on the scene said at least six people could be dead but the exact number of victims remained unconfirmed. Motorists scrambled out of their cars to help. At least one woman, Katrina Collazo, escaped from a half-crushed car, pulled out unscathed by rescuers. “Thank God … my daughter is alive,” said her mother, Ada Collazo, in Spanish, after rushing to the scene. “I thought my granddaughter was in the car, but she wasn’t. She’s in school.” READ MORE