I use to haul a lot of cattle in and out of that area to the front range of Colorado. 50' livestock trailer, 14' high, 20" ground clearance, 50,000lb.+ loads. No problems at all on main roads. Corral and ranch roads could be tight. Always took a chain saw for those roads.
Now that you've got me thinking about that area, I might just load up the mh and head up there this summer for a few days. It's beautiful country and not far from me.