CHUBBUCK — Firefighters with help from road workers extinguished a brush fire along Interstate 15 in Chubbuck on Friday afternoon.

The blaze on the west side of Interstate 15 southbound just north of Chubbuck Road was reported by contractors working on the freeway around 2:30 p.m.

Chubbuck and North Bannock firefighters responded and had the fire mostly out in about 20 minutes. The brush fire scorched about five acres along the freeway and caused police to temporarily shut down one of the southbound lanes, which resulted in southbound I-15 traffic being backed up for more than a mile. 

Authorities said the contractors used their construction equipment to help firefighters contain the blaze. 

The fire was caused by welding sparks igniting the dry grass near the freeway, the Chubbuck Fire Department reported.

Firefighters remained on the scene until around 4 p.m Friday extinguishing the remaining hot spots.

The blaze did not result in any damage to structures, injuries or evacuations, authorities said.