Some thicker washboards near the start if that's what you call them. Pretty wide most of the way with lots of places to park trailers etc. Narrows to mostly single lane after 12.5 km Yarrow junction. I believe the road after 17 km Parmenter junction doesn't exist anymore or is a bike trail. Followed this road onto Parmenter. Potholes the whole way.
Drove 10km in. I can't speak on behalf of road beyond this, but I made it without any issue in my Corolla. Some potholes along the way, but nothing too bad.