It's a great scenic route that I've taken several times in my TC. What I've seen taking this route are 5th wheels, TT, MH, and simi-trucks. There are some steep areas, but very manageable.
Hwy14 east just outside of Cedar City

Navajo Lake stop east bound

Duck Creek area, east bound

This sign is at the Hwy89 intersection on Hwy14 going west.

west form above photo

Just take your, drive slow.