Found your note up there a couple of weeks ago. I'd been a week tripping across the Chilcotin. Ended up on China Head Mtn road sort of by default. I didn't get to the washout actually, it really started to snow and we headed back to Lillooet the long way.
It's passable, there was a bypass done. Requires going through some bushes and we have a new creek crossing now since the old one is not accessible via that path. Has a couple more off camber sections but otherwise it's not a big deal.