I'm not really sure if this is still an issue, I just know what I've read from on here. In the past, people have always been very cautious with hedgehogs in PA, no matter what the reason - driving through, visiting, or living there. PA is the only state that really calls for this caution, as they're the illegal state with the most horror stories for hedgehogs being confiscated and euthanized (from what I've read, anyway). If I'm remembering right, there was a huge thing awhile (years) ago where some people decided to ignore the law, were breeding hedgehogs & selling them, and got caught. There was a huge panic to get the hedgehogs out of state before they were euthanized, etc. and since then, most people are pretty leery of having hedgies in the state for whatever reason.
That said, I don't think I've read of any specific incidents where someone driving through PA has been stopped or had their hedgehog found and confiscated. I also usually only read stuff on this forum though, no other hedgie forums or groups. I'm not sure whether you'd be good to drive through to the job or not, but i would say personally, at least, I would not stay overnight in the state - perhaps stop and stay overnight in Ohio instead, then get through PA all in one day.
Hopefully you get some more definite answers regarding actual incidents and whether the situation is still as serious as it was in the past! Sorry I probably wasn't too much help, lol.