On Google Maps set the `terrain` mode to see where there are mountains. Zoom in to see details, all the way to Streetview.
139 crosses Douglas Pass, 8400 ft. From the map the tightest turns are on the south side.
In a recent thread I found that the main grade on 141 is the climb out of the river at Slick Rock Hill.
According to the Bike routing option this route has total climb and drop of 12000 ft. The alternative through Moab is up/down 10000. A third option is Lizzard Head Pass south of Telluride. This has more climb (15000), but is often recommended as the alternative to 550 between Oray and Durango.