From the 'Mountain Directory for Truckers and RVers' (highly recommended, by the way):
If you're coming southbound: It's 6 miles of 6-8% grades with 25 mph speed limit and numerous 15 mph curves and switchbacks. About 2-1/2 miles down from the summit there is a 1/10 mile section of 10 or 12% grade. After the 6 miles of 6-8% there are several miles of 4%.
When we last drove this southbound the pavement was breaking up badly on the 'drop-off' side. Hopefully, it has been repaired!
We enjoy driving Hwy 550 (Red Mtn. Hwy) from Silverton to Ouray much better than Hwy 139.
๐
Full-Timed for 16 Years
.... Back in S&B Again
Traveled 8 yr in a 40' 2004 Newmar Dutch Star Motorhome
& 8 yr in a 33' Travel Supreme 5th Wheel