It's a beautiful drive, I can say that! And not much traffic. But as for winter, I'm not 100% certain. The state is always good about getting ahead of bad weather, especially on the interstates. But IF it's a particularly bad/sudden/unrelentless snow storm, well all bets are off.
There are a couple winding parts, but they are not sharp or steep -- rather long and leisurely curves.
thanks for the info. it was a nice ride