This forest service road used to be driveable from Bridal Falls to Chilliwack Lake road by 4x4 vehicles.
Along this section there have been slides and the trail is only wide enough to hike or ride a motorcycle if you are brave.
Fisher007 and I saw a couple of the latter. After about 1/2 mile or so along this trail it opens right up again and we saw quads, 4x4's and motorcycles who had come up from the Chilliwack Lake side.