We recently took our scout troop to Woodridge and had ample space for the group.  The 4.5 mile trail was a nice activity for the scouts during the morning.  The trail was moderately difficult and could be problematic if raining.  The vault toilet was pretty clean and well taken care of.  It was fairly busy between the car campers and those who utilized one of the many hike in sites.  Several of the hike in sites looked promising and I hope to one day return and use one as well.