I crossed this area in the fall some years ago in a mini-camper (Element). Coming from the east on UT12, I picked up Ut143 at Panguitch, through lava fields to Cedar Breaks. Then north to the top of Brian Head (11200 ft). Then down through the ski resort on 143 to I15. There is a genuine 15mph S curve switchback on that descent. There's a "not recommended for trailers ahead" sign in the ski resort. Sign at the bottom says 13% grades.
Then south from Parowan to Cedar City, and west to Caliente NV and on to California.
Signs on 14 are for 8% grades.
