In 2012, I did the route you mentioned, but going west. With my 2012 340hp with a toad, I had no problem. I do not remember any construction then.
Since then, I added Allstays "Trucks & Travel" and Camps & RV to my I-Pad. They show the worst grade between Ten Sleep and Buffalo to be 5-7% grade. I did do a 10% grade elsewhere in Wyoming that if I new ahead of time, I would have avoided.
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Gale & Hank- 2012 Berkshire 390BH
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