"So there is a huge avalanche path about 1/8 mile after the summit that you will never be able to get around."
...is all that I heard from the locals back in the 2011 season. Forest Service, Fish and Game, and local Law Enforcement all took the time out of their day to come up and tell me. This all came with the "what the hell are you thinking" look except for the sweet shuttle ladies from Caldwell Transport that actually appreciated someone putting in the effort to try and open the road. The most recent info about the slide path they had was 3 months old and was from Sledding recon.
This was right in the heat of battle of a newly appointed USFS director that would not give out the traditional work permit to have commercial companies post a bond and get snow removal crews in. So it was melt or private parties get after it. Well, had to see it for myself. The Les Schwab guy was more than willing to give me a discount on chains because he had never sold a set in May before.
Simple technique, light weight truck with chains, punch it up as far as you can go and then back up. Repeat. Long handle shovels and second truck to pull first truck out. Half a day later, we had a subaru with trailer making it thru. Most of the road in the sun was no problem but about 1/4 mile of deep (18") snow was in shaded spots. All within eyesight of the summit. About 6 folks to help. It had its moments of being fun, but was work.
Honestly, after doing Marsh 3 times, and hearing of the trees down this year, I would get after the road. Not to say if you hit it early while snow is still frozen you might make it, but I know how most of us travel and the light weight 4X4 rigs are the only ones I know of successful with those tactics.
...and the slide path, south facing, drove right around it. Feels good to be the first ones in.
Still don't understand with the amount the USFS loses in cancelled trips why they don't let someone post the bond and get the work done right. Win-win right? I know we left a rut or two.