The Associated Press

BUTTE —A Dillon man was killed when the semitractor he was driving failed to negotiate a turn west of Wisdom, went off the road and down an embankment.

Beaverhead County Deputy Coroner Julie Briggs tells The Montana Standard that 61-year-old Billy Dingley died Tuesday afternoon.

The Montana Highway Patrol says Dingley was driving a semitractor pulling a commercial flatbed trailer and hauling round hay bales at about 3 p.m. when he failed to negotiate a turn in Montana Highway 43 halfway between Wisdom and Chief Joseph Pass.

Sheriff Franklin Kluesner said the cab and trailer flipped and went down a steep embankment. The patrol says speed was a factor in the crash on the narrow, winding highway.