The Great Northern Highway in the Kimberley State Region was closed after a diesel truck carrying fuel caught fire on Thursday afternoon.
Travelers were advised to stay off the main road after the truck caught fire 30km north of Warmun in Wyndham County-East Kimberley at around 12:30.
The highway is closed between Halls Creek and the Victoria Highway intersection and is expected to remain in effect until noon on Friday.
The cause of the fire is not yet known.
Main Roads WA said an investigation is ongoing and a road inspection is likely to take place on Friday morning.
After burning “without containment and without control” for about four hours, the firefighters successfully brought the fire under control by 5 pm, the fire department and emergency services said.
The DFES has now issued a bushfire warning for people traveling south of Warmun along the Great Northern Highway.
There is no threat to life or home, but people are encouraged to be aware and keep informed if the situation changes.
Motorists should pay attention to emergency services personnel and follow their instructions.
A danger warning was in effect for most of the afternoon and area residents were asked to stay inside their homes, away from smoke or fumes, with doors and windows closed.