The campsite was closed, maybe end of season or because of COVID.  Not sure but we kept driving past to the dispersed camping sites along the road.  There are 9 miles of road with campsites every so often.  It was a rough road that we took our time on to not damage anything.  We drove 3.5 miles or so and it took about 30 minutes.  Well worth it to step out of the truck and hear nothing.  Absolutely nothing but silence.  We looked out across the valley towards Teton national park.  It was a cold night with frost on the windows.  Highly recommend!