This. But you can’t stop an the private section and leave the road. Quite common in national forests in Colorado. Most of the roads have easements. Had a coworker where such a condition existed, but no easement and his land was patent land. He legally closed the road after a court fight with the county. They lost and he won due to patent land and no easement. If it had not been patent land or there had been an easement he would have lost.
And in my case, OnX showed a big strip along a county road as private, blocking NF access. My NF map showed it as private as well. I spotted a teeny NF sign mostly hidden by pine boughs, so I stopped and talked with the owner of the adjacent ranch and he confirmed that it was, indeed, USFS land, and he had no idea why it is shown as private on the maps, but he didn't mind since he was also a hunter and hunted that side of rhe road.
You were lucky to get ahold of a warden. We ran into a similar situation during second rifle and never could get a call back due to understaffing. The landowner in our situation had a gate with signs posted that the road was private and trespassers would be prosecuted, despite the road being a county road.
Between that and watching large private ranches chasing elk herds back into their property it was definitely frustrating but just part of hunting public land I guess.
Until this occurrence I have never gotten ahold of a game warden in the field when I’ve tried calling them. I chalk it up to two things; it being July and this particular unit has pretty good cell service.
