I drove as far as 5KM or the upper parking lot. Up to here its easily driven in any low clearance 2wd vehicle. There is the odd cluster of potholes and washboard but the roughest section of road is actually the first 200m or so up to the lower parking lot. If you make it past here you can easily make it top the upper lot. A great change I noticed since the last time I was here long ago is that the gate is no longer locked at night and is now open 24/7.
[From Ridgeline Overlanding] - Went up Friday morning. Pretty icy on the first steep stretch after gate. As I came back down that stretch there was an SUV in the ditch and I had to use ABS and “nerves of steel” to avoid him. I then pulled him out of the ditch and proceeded to slide a but towards the final curve. Moved to the oncoming shoulder to get away from the ice. The rest of the road was fine, but I’m in a Honda Ridgeline which is very well suited to those conditions, and have AT3 4S (winter rated) tires. The vehicle I pulled out was a 4WD Chevy Tracker with all seasons that were not designed for snow & ice.