Don't follow the direction from the given long/lat. They will take you to someone's private property.

After discovering that the given coordinates were incorrect we drove up the road a while more. We reached a fork and veered right. Shortly after we saw a campsite to the left (about 9 miles off the highway). This particular spot wasn't very private as it was immediately off the road, but there were bear boxes, restrooms, and a creek nearby.

Also at this site was an informational sign that showed where all the campsites were off this road (photo included).