I went over that bridge a couple months ago, and didn't find it challenging, though from several things, I suspect the bridge was built before WWII with 7 1/2 to 8 foot wide lanes. Certainly not more commmon 9 1/2 ft lanes.
I've not found any source that list lane width almost anywhere in the US.
I've gotten out and checked many places with my tape measure.
I find that many, or most, people towing and driving RVs do not know their vehicle width and height.
They take the mfr specs as gospel.
My truck with the towing mirrors out is 8' 9 1/2" wide.
My 8' wide TT is 8' 5 3/4" wide to the outside of the awning.
I've measured friends rigs. I've found high end 5ers that are 8' 11" wide and 13' 11" high.
