Day Two from PSR to Beatty:
I have ridden over the Saline Valley South Pass many times on a variety of bikes including a fully loaded BMW R1200GS Adventure without a problem.
This trip the conditions of South Pass were very different. The road is still signed "closed" as it has been for years. The road was in good condition up until the Hunter Mtn turn off but then as we headed down the north slope of South Pass, we saw the road had been washed out in many places.
Some equipment has done some repairs and has pushed bolders into some of the washed out sections where there used to be water crossings. Once again, a lighter dual sport, we were on a KTM 525EXC, KTM 500EXC and a plated XR600. I consider all of these bikes light weight dual sports.
Based on what I saw, anyone rideing a fully loaded KLR650 or heavier adventure bike will need to have outstanding skills to navigate South Pass. Larryboy is one of those kind of riders who could probably ride an adventure bike on South Pass.
A good rider on a light dual sport (less than 400 lbs. and preferably a 300 lb or less bike, with experience riding rocks, will do fine. Again, I think it is a bad idea to ride alone. With all the rocks that have to be navigated, you could easily tip a bike over and find yourself pinned under your bike with no one to get you out for hours or days.
South Pass got worse and there was a 100 yard long section with a deep rut and large rocks to navigate near the bottom of the north slope of South Pass. This picture does not give a good idea of how hard this section was to ride: