The article implies that the driver didn't understand the sign. Unclear whether the writer thought that was the actual reason.

An alternative reason would be that the driver consciously disregarded the safety notice, perhaps thinking it overly conservative, or thinking that they could get through with only stress to the bridge that's not traceable to them.

There is a height and width notice on the bridge itself. If you know it's vulnerable to succumbing to a certain amount of weight, put that weight on the bridge as well. Not on a small vague sign a mile up the road.

But also, pay attention to signs.

I think http://11foot8.com/ proves all the signage in the world won't matter.

Wait, isn't that bridge in that one horror game? I could swear I saw it before.

I thought I recognised it from Beetlejuice.

It has that classic look, I immediately though I saw it in a movie.

Now try a Tesla Cybertruck.

American obsession of multi-ton metal chunks on wheels has it's 2nd order effects.

I think it's important to point out that the F-750 is a commercial vehicle. The guy who cuts our hay has a similar vehicle built on a Dodge platform by a fabricator which is basically a small dump truck. A fully loaded F-750 could weigh as much as 37,000 lbs.

It's unlikely to be an excessively sized "big ass truck" driven by an office worker but rather a case of poor judgement by somebody who really needed a vehicle like that to move a heavy load so it ought to be filed with the various cases of tractor drivers who keep getting their vehicles stuck because they drive them in the wrong places.