Why were they demo'ing that bridge with traffic still running underneath it?
It may be possible the structure was way worse off than anyone anticipated or discovered ?
Maybe someone who does this kind of work could correct me but doesn't demo jobs like this have a engineer that figures out how to take a bridge down? I would think thier would be a lot of consideration to take into account when taking down a structure this big while traffic is still passing underneath. Not something you just pull up to and start hacking away at.