I did visit 12 during 2015. I watch this video to relive the things (among other videos from /u/AmericanRoads). Blessed are the people who live in this part of the world.
Depends where you’re at I’d assume. Some parts reach over 10,000 feet, that surely would be difficult, plus steep grades, twisty road, and fairly narrow roads. That being said I’m not sure how they treat or plow roads on UT12
Thank you for your great video. Did you read about how all those rocks were formed? Imagine that this region was like Egypt and the Sahara: 100s of millions of years ago. Vast sand dunes, rivers flowing into oceans. Ocean levels changing and environments too! enormous deltas becoming covered with sand dunes, which were buried beneath stream deposits. This happened several times. See "Geologic Road Guides to Grand Staircase and Escalante" at the utahgeology website. Quick View pdf
