Uhm... Yes.
I know, bad answer.
If I think the time to bug is nigh, I'll probably be hitting the road earlier than most people will.
If not, then there is a state route that parallels the interstate- problem is, either way I'm on that route if fate takes me back to where I want to be, as the road in question is one of only three truly east-west roads in Vermont. I've got a couple of back up routes, but both are a little interesting in winter and right now will be full of panicy ski-people trying to get home. *shrugs* Nothing is without trouble.