Update 8:57 p.m. The gas leak has been repaired and Highway 87 has been reopened, according to Lockwood firefighters.
The leak started on the 2800 block of Highway 87 when a homeowner struck a line while digging, Lockwood firefigthers said. Contrary to early reports, the cause was not related to construction at the new Lockwood High School.
The road was closed for about 2.5 hours and reopened around 8:30 p.m.
A gas leak closed a portion of Highway 87 between Hillner Lane to Johnson Lane Monday night, according to Lockwood firefighters.
The leak is apparently related to construction of the new Lockwood High School in the area, according to the Yellowstone County Sheriff's Office.
The closure started around 7 p.m.
This is a developing story.