Forest Fire Service spokesman Bert Plante said Route 206 might be reopened Thursday afternoon. Smoke from the fire has limited visibility on the road, which has been closed since the fire began Tuesday afternoon.
Firefighters had the blaze 50 percent contained as of midday Thursday.
"The situation is starting to look a little better," he said. "We're starting to get a handle on it."
Plante said firefighters do not expect the blaze to travel much beyond its present boundaries unless there is a sudden increase in winds.
Several smaller brush fires broke out Thursday along Route 195 in Howell Township, but were considered minor, Plante said.