It depends which direction you are coming from. The campground is very accessible from Prescott - no issue there. There were some fairly sizable rigs camping a few weeks ago. If you are coming over the mountain pass from Wilhoit, yes, there is a posted 40-foot combined length limit posted though the road didn't seem any worse than the 89A to Cottonwood where there is a 50-foot limit. Either way, the entrance to the campground is right off the highway - the coordinates provided here are correct.