The OPP may have to close part of Highway 69 if smoke from Parry Sound 33 worsens.
The smoke has been drifting onto the major Sudbury to Toronto artery for days since first starting up July 18th.
Since Sunday the fire has grown to 8,224 hectares, an increase of 573 hectares.
The Ministry of Natural Resources and Forestry says with smoke drifting onto the roadway continuously, the OPP may have to close a portion of it if thickens up.
Electronic signs along Highway 69 have been notifying the motoring public about the smoke.
Crews from Mexico are among the firefighters tackling this blaze.
Across Northern Ontario there are more than 800 forest fires being fought by more than 600 firefighters from Ontario, Canada, the U.S. and Mexico.
(Written By: Rocco Frangione)