I recently heard a rumor in mountaineering circles that the road in question has been repaired and that the original trail is back open to use. I have not investigated these claims. Let me know what you find out.
FS 6550 is permanently closed near Bullbucker Creek. Access FS 6550 at Jack Pass, go downhill a short way and then turn left onto FS 6554. FS 6554 is very narrow but in good condition. Road may be gated at Evergreen Creek in early season.