I am involved in the revision process for the OHV network within the SBNF.
There is a proposal to open 3N14 from the USFS boundry all the way to Big Pine Flat campground to green sticker vehicles which I supported.
Illegal route proliferation is a major problem within the SBNF as well as the BLM lands. The USFS recently completed an illegal route proliferation survey and since the survey was done, more new illegal trails are popping up in places. The 3N59 vicinity, along with intrusions into the Deep Creek Non Motorized area are places that are problamatic within the USFS area.
They do have a great network however, with a variety of trails at different skill levels.