Douglas County residents who enjoy riding off-road vehicles in the Umpqua National Forest should set aside their worries about road and trail closures. Out of 4,007 miles of roads open to ATV riders, dirt bike enthusiasts and other off-road users, the Forest Service sees only 6 miles of roads that must be closed because of environmental damage. If those roads lead to dispersed camping areas traditionally visited by local residents, Forest Supervisor Alice Carlton said she will look for alternative routes so the camping areas aren’t cut off. Additional road and trail closures would come about only if local residents …