Utah State Highway 313 branches off Highway 191 just shy of Arches National Park on the road from I70 to Moab. The road climbs through Sevenmile Canyon to Dead Horse Point and the Island in the Sky region of Canyonlands.
This used to be a good place to find camping for Moab trips. When I visited the canyon in 2005, there were signs indicating that several of the campgrounds in the wash were scheduled for closure.
There are several "primative" campgrounds. These campgrounds do not have facilities. Campers are required to bring their own toilet (such as you find in many RVs.)