I made a late edit on my post.Even then the clearance was higher in the center lane that in the outside lane. The trucking company had paid for a local escort. Who knew what and when did they know it. :)
PS I made a late edit on my previous post.
Aren't local escorts usually for wider than normal loads? Perhaps his load was both, an escort car won't help if no one verified bridge height. Doesn't sound like it's the trucker's fault.