In excellent condition all the way to the "Mamquam South Mainline turnoff". Any car could do it. Basically avoid the potholes and sometimes sketchily parked cars and you're fine.
Road has not changed since the last report, but has changed drastically since last summer when I was here. Most of the previous potholes have been nicely graded. Some sections are a little washboardy but any 2wd car should make it up no problem.
went up to the 16km mark, smooth surface most of the way. few potholes, very manageable. 50+ km/h is very possible. some loose rocks after 13km. done in 2020 highlander awd with highway tires.