A man, 63, has been critically injured when his windshield was struck by a chunk or chunks of concrete flying from a bridge over the QEW near Niagara Falls as the heavy load of a trailer truck hit the overpass. The freakish accident occurred because a huge excavating machine was loaded too high on the tractor-trailer. Hurtling chunks of concrete struck the windshield of the victim’s KIA sedan and sent glass and concrete into his face. The man is in a local hospital. The accident occurred on Tuesday evening on Toronto-bound QEW near Highway 420.