A fire burning south of Bridger was estimated to be 1,635 acres in size Friday night, according to Billings Interagency Dispatch Center.
Named the Bobcat Pass fire, the blaze is west of U.S. Highway 310, roughly 15 miles south of Bridger and roughly 10 miles southeast of Belfry, according to National Wildfire Coordinating Group Maps.
It was estimated to be 30 percent contained as of 9 p.m. Friday, according to Al Nash, chief of communications for the Bureau of Land Management's Montana Dakotas State Office.
The fire is burning in a "pretty remote area," Nash said.
In addition to fire engines on scene from multiple agencies, tanker planes made numerous trips Friday in order to drop retardant on the fire. Some progress had been made on the fire by Friday night, allowing tanker activity over the fire to slow, Nash said.
The fire is fueled primarily by grass, brush and juniper, according to the Billings Interagency Dispatch Center.
"There are some smaller fires that are burning in the Billings area. That certainly would be the largest," Nash said.