I disagree with the below comment about how a stock tacoma couldn't make it up the first washout without lockers. My stock 94 toyota pickup with 31 inch tires ( 1 inch bigger than stock) made it up. First line was bad and tires ended up in the air, next line 4low and better line was no problem. Next a toyota 4runner stock made it. The next washout higher up with just creek bed ruts much easier.
Somebody regraded the road all the way to Spetch Creek crossing/Valentine Lake Trailhead. I got my 2023 Rav 4 up there. No problems. I agree with high clearance, but not 4WD.