Videos recorded right before a pedestrian bridge collapsed near Florida International University earlier this year show a construction crew using a jack to tighten the rods that ran through a concrete support truss — work that might have caused the walkway to fall down, NBC News reported.
The dramatic collapse on March 15 killed six people — five vehicle occupants and a bridge worker — and injured eight others.
Photos released earlier this month by the National Transportation showed large cracks in the concrete just days before it came crashing down.
