What I don't think I would do though, as the videographer/news reporter said that truckers stuck there said they would, if need be, would be to stay there for 2 days, if that's what it took.
If Eastbound, there is another way, although it's a long way around, and you'd have to pass the Southbound DOT scale near Wheeler Ridge before continuing on to Gorman to use CA 138 across to Lancaster.
If Westbound, the same could possibly be done in reverse, if 138 wasn't also suffering from flooded dry gulch washout over the road.
It travels along at higher elevation, so I tend to think it wouldn't be as likely to suffer flooding (but I could be wrong).
I've used that route more than once for a variety of reasons, in a private auto, commercial freight, and while motorcycling.
Ummm that area of road was shut down by Tejon because of a mudslide. Both sides of the freeway. I drove through there a couple of hours before the slide. They were supposed to have a lane open each way by now but that is some slow going. Guess I’ll sit on my boat in Ventura awhile longer til they get all the lanes open.