Sam D.,
The problem is this, the area has changed a lot recently. The road is paved all the way from Lake Arrowhead to that wooden bridge now. The last time I was up there @ a month ago the road was closed from Arrowhead because of the snow. It may still be .? So good luck with that.
Next time I am up ther I will take my GPS and post the coordanances here for a record.
Good luck I am glad to help !