The North Delphia Fire has burned around 3,700 acres in Musselshell County as of Friday night.
Bulldozer and blade lines are around 100 percent of the fire to prevent spread, according to DES coordinator Adam Carlson.
A flyover revealed five outbuildings were damaged by the fire but no homes were reported as damaged.
DES hoped to have the fire under control by Saturday morning.
The North Delphia subdivision was evacuated on Friday afternoon and approximately 120 people were fighting the fire, said Carlson.
The Red Cross has set up a shelter at the Roundup Community Center for those being evacuated.
Livestock can be taken to the Musselshell County fairgrounds.
At this time crews are working to protect structures and slow the fire progression.
There are no confirmed structures lost at this time.
The blaze started near Buckhorn Drive north of the North Delphia Subdivision on Friday morning by lightning strikes and grew rapidly.
Crews were responding to other area fires caused by the same storm, so there was some delay in their response to the North Delphia Fire.
Several aircraft have been brought in to tackle the blaze as smoke settles into the Bull Mountains.
DNRC, BLM, Bull Mountain Fire, Round Fire, Hawk Creek Fire and Melstone Fire are all responding.
Musselshell County DES announced that U.S. Highway 12 east was reopened shortly after 5 p.m. on Friday.
Red Cross shelter information:
The shelter is set up at the Roundup Community Center which is located at 700 3rd Street West in Roundup, Mont.
Everyone affected by the fire is welcome and all services are free of charge.
Hot meals, snacks, beverages, showers, beds and essential supplies will be available.
People are encouraged to bring clean clothes, toiletries, medications, bedding.