Great Falls, MT : 39-year-old woman died in a crash on U.S. Highway 89 in Fairfield on Wednesday afternoon, June 17, 2015

Authorities say a woman was killed when she crashed her car into a tractor-trailer in Fairfield.

The Montana Highway Patrol says the 39-year-old Fairfield woman, whose name has not been released, was driving on U.S. Highway 89 on Wednesday afternoon when she crossed the center line and hit the oncoming truck.

The Great Falls Tribune reports the woman was not wearing a seat belt. The 24-year-old truck driver from Fairfield was not injured.

Investigators say road conditions were clear, and it's unclear if alcohol or speed played a role in the crash.

Source :
Woman, 39, killed in crash with tractor-trailer in Fairfield