Taking a Toll 0
This is a really bad idea. It is grab for easy money to avoid making choices and it violates the spirit and purpose of the interstate system:
It would be fairer to everyone to increase the gas tax a penny or two. If you want to soak drivers, soak all of us, not just some of us. After all, all of us are helping wear out the roads.
Aside: As a Virginian whose ancestry includes South Carolinians, I understand that persons might be willing to pay to leave North Carolina.
Afterthought: Imposing new taxes and calling them “user fees” is a Republican camouflage tactic that has been around since Reagan. You cannot expect straight government from folks who don’t talk straight.