Gravel? Holy shit, that’s poor judgement. How can you be comfortable driving such a big truck over a wooden bridge, then add potentially tons of gravel?
and is probably going to hear about it for the rest of their lives.
As they should. They either ignored the signage and/or were oblivious to the weight they were driving around. Both major safety issues. They should have their license suspended for a bit and potentially banned from a cdl.