It has come out now that the truck was oversize and the bridge superstructure was not flat. As the truck entered the bridge he was forced to the right by another truck.

Apparently the car running in front of him has a pole the height of the load which cleared but he drove over to the right and hit the low part that comes down in a curve right at the edge of the opening.

Sounds like an unfortunate combination of errors which led to the big load hitting and taking out the "keystone" of the bridge which caused it to collapse.

Very fortunate that nobody was killed or seriously injured...incredible in fact.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.