OAKLAND, Calif. (KGO) --
A person riding in a car on the new span captured a video as a fire truck rushed along the old span the 40-year-old labor foreman's aid.
The foreman was hit in the chest by a pipe and fell back from the shock and hit his head.
Caltrans says the pipe was likely part of the bridge's lighting system.
The worker was wearing safety gear and is expected to be OK.