kohldad wrote:
One thing to remember, a state highway detour will only use state highways so there could be a much shorter detour they aren't allowed to use. A county road detour can use any road for the detours. In our case of the bridge closing, I wouldn't recommend the two track dirt road we took but a few of the locals were using it making it a very interesting 2-way traffic road through the gullies and mountains of south eastern Colorado but 10 miles of that saved about 120 miles of pavement.
While often the case that they stick to state routes, state detours can use local roads. The catch is the local agency will often ask for maintenance and repair costs for the detour route, so it's often not cost effective.
We typically pull up the route on google maps ahead of time and look it over to see if we agree with the recommended route. The challenge is if you aren't familiar with the local roads, you can wind up on a back country 2 track trying to second guess the official detour.
Back to the original question: Brought to mind old movies of Custer's Last Stand but a circle of random RVs with the injuns circling from high ground.
Reality is if you aren't stupid and obey the laws, it's not a big concern driving on state routes thru the reservation.