Most people refer to this road coming from Fortuna Ca. to Redding, Ca. I don't think I have driven this with the Bighorn, but I have driven it several times. While it is one of the twistiest long roads in the state, it is crossing a forested mountain range, and thus logging trucks traverse this route regularly. Many 15 mph switchback curves. There isn't a good East-West alternative road for about 60 miles or more North or South. People do this every day in RV's, but it isn't easy.