Police have closed part of the Great Northern Highway between Cape Leveque Road and the Roebuck Roadhouse as emergency crews work to contain a bushfire near Broome.
The fire is burning near the Malcolm Douglas wilderness park, 15 km east of Broome and 6km from the 12 Mile community.
A FESA spokesman said the fire was under control and there was no threat to lives or homes.
The fire was believed to have been caused by lightning.
Motorists have been advised to avoid the area and be aware of fire and other emergency services personnel working on site.