Ha, no interstate?
Certain places that’s the only way through that is passable some times during the year.

We have roads here that are on the map but are a challenge in a full size Bronco with 31″ tires in normal weather. Others are so washboarded that you are creeping at best.

Other times during the year (winter) the interstate is the only way that is clear.

We recently had a massive pileup a couple hundred miles east of here, the interstate was closed clear over on this side of the state, because there was nothing between here and there, no rooms, no parking, nothing.

Something else to consider, all it takes is one toothless redneck with a chainsaw and a .22 and you’re just as stuck as if you were on the pavement, perhaps more so, depending on the area.