US Highways 163 and 191 in Utah

[Domer1972]

We will be traveling from Page, AZ to Blanding, UT via US-163. I note in the Mountain Directory that at MM-15 in Utah a 6-10% descent begins for about 6 miles, stair-stepping down most of the way with a one-half mile final descent of 10%. There is also a one-half mile northbound ascent south of Blanding that is an 11% grade on US-191 - nicknamed "Drive Shaft Hill." Has anyone traveled these routes with a motorhome, towing? Any insight is much appreciated.

[Blackrock]

I've been through there many times, just last year pulling my fifth wheel coming and going. It's a steady pull from the San Juan up to Blanding but it's a good road with a few passing lanes.