Good places to see.  My favorite area to visit.

My wife and I were there on motorcycles a few years ago and headed south out of Torrey, UT on Rt. 12.  A lot of it was straight down on one side of the road and then, near Hell's Canyon, we rounded a curve and it was straight down on both sides of the road and no guard rails on either side.  Gave us a case of the rear end puckering until we got past it.  Then rode the rest of the way to Escalante in the dark-which was a little puckering too!  Rode that area again a few years later and knowing it was all there, wasn't too  bad to ride that time. LOL

   The places you mentioned in Utah are my favorite places to visit out west so I'd hate to miss them if I was driving out through there anyway.