* there are oversized load spotters like those folks with a hobby of keeping track of aircraft or trains?
* there is economic intelligence value in extracting and surfacing data from oversize load permits?
I'd guess that there's not a lot of stock trading value in tracking oversize load permits. I think most publicly traded companies announce large capital investments like new factories long before trucks hit the road.
Maybe so. I'm aware of satellites used to measure oil tank utilization [0], so sometimes odd information is informative for a specific trading strategy even if it is not useful in general.
For the 2nd, perhaps in identifying critical routes which may be worth an extra bit of infrastructure funding for upkeep to allow such important loads to continue to transit without issue.
Then again, the need for permitting should mean that state DOT's are already aware.