OK, one of you engineering wizards help me out with this one for a minute.
Here is what I don't understand. If the boom is sticking out of the bridge, lets say a modest 12ft?? Like in the below picture:

Then how in the heck did he not damage the side of the bridge what so ever? Like in the area I pointed out in this picture?

Anyone?
Assuming the rig was traveling right to left, because it shows the tail end of the semi trailer, if the boom struck the bridge it would cause the bucket to raise up which does justify the damage over the cab, but theres no way the boom could end up in the position that it's in right now in the pics without taking out the side of the bridge, but yet in all the pics the bridge railing are perfect..
Is it possible that the cab end came down so hard after the initial impact that it forced the boom up through the bridge? If so then he was going really, really fast.