Go to Google maps, find Redbluff California and just search west a mile or so and see hwy36. That sign does not lie. Its perfectly paved, twisty, narrows to a 1.5 wide road near the top and spits you onto the Coast near the Redwoods. I have ridden this hwy at least a dozen times in the past. A great destination.
You can use the Google Maps street view to see the hwy. Amazing hwy!
Absolutely meant to include that sign in the pic! The sign has moved a bit in the last few years.