Trail is ridable, but still under construction.  It's over 90% done - the bridge across Little Joe creek towards bottom still needs to be built - but other than that she's a beatiful piece of single track - moderately challenging but fun for all levels!  There aren't trail signs yet.   There's a scary sign on board at yellow gate indicating "closed to public" but that's talking about the watershed area (which if you go all the way up the road you'll see boundary marks for - keep out of that area unless ya want jail time...)

Right now, mid-Winter-ish, the trail is only 1% muddy.  compacting well, and trail designed to manage water excellently.  *thumbs up* to the builders!  Hit one patch of squishy muddy ground but that looked like a permanently squishy spot - and it's all good - not a ride without getting a little mud in yer eye.  ;)

Related posts about Sandy Ridge -- http://nw-trail.org/node/1663

This thread has a link to the BLM Sandy Ridge brochure with a current trail map  -- http://nw-trail.org/node/1558