Trails at Saint Mary's Wilderness are also closed.
The blaze has spread to 1,000 acres over parts of the George Washington National Forest.
Crews on scene say the blaze is threatening structures as they are work to contain it.
Crews are using a helicopter for aerial surveillance along with bull dozers and brush trucks to tame the flames.
They say dousing the fire with water is not practical.
"Steep and rocky terrain, high temperatures, low humidities, significant winds, we have about 40 people assigned to this fire with more on the way and we are constructing a combination of dozier line and hand line with aerial support from a helicopter doing recon," said Pete Irvine, U.S. Forest Service.
Firefighters say the blaze began when a car caught fire and the flames spread to nearby forestry.
There have not been any injuries reported at this time or any damaged structures.