Turn left onto FDR 564 to the Rattlesnake Trailhead Parking lot. You may ride your bike on any forest road or trail unless it is specifically closed to mountain bike use. The closed routes are few and well signed. Expect to carry and walk your bike for considerable distances on almost all of the trails on the national forests. No trails are maintained for continuous mountain bike riding.
Trails are narrow and sometimes steep and are always pretty rough due to rock.
The closure applies to motorized vehicles, not to horses, hikers and pedal-powered bikes. You may camp any place except where posted as camping prohibited. There are very few prohibited places and they are well signed. There are restrictions on open campfires during certain times of the year. Check with a local district office for dates and times.