I guess I have to disagree with the other posters. We drove 401 with our 27"TT last week and there were sections that were curvy and narrow. While there was room for our rig, if we had met anyone that was towing a similar rig, it wouldn't have been pretty. No room to pass in the steeper sections. When we return, we will be coming in from the west on the roads that have been treated with dust suppressant. Much smoother roads. We left the area on Buckhorn Wash Rd. Nice road until you cross the river, then gravel with some washboarding, but at least there was room to pass oncoming traffic.If you are coming to the area from the west on 401 near Castle Dale, the road is hard-packed, nice and smooth. This will allow the higher speeds listed by other posters.

It is a county road. It's is hard-packed gravel and nice and wide. You should be able to do at least 40-50 mph on it. Enjoy the views and if possible spend a day or two exploring. Lots of boondocking sites.

We have a 28’ haycock and when we came from Moab to visit the wedge that’s the route we took and we had 0 issues. *make sure you look into everything the wedge has to offer.