Mark Wiles, a Georgia Forestry Commission senior forester, says the fire has burned 7,852 acres and is 40 percent contained.
Wiles says firefighters believe the burnout attempted over the last two days was effective.
Firefighters burned out potential fuel between Bear Bay, where the fire had advanced since it started a week ago, and Georgia 177, which connects U.S. 1 to Okefenokee Swamp Park.
Wiles says a light rain a few days earlier dampened brush and low growth in the area just enough to make it difficult to ignite.
He says four helicopters, 12 fire engines, 29 bulldozers and 107 personnel are assigned to the fire.