BOZEMAN, Mont. -

Troopers with the Montana Highway Patrol investigated two separate crashes in the same area of Interstate 90 east of Bozeman.

The first crash happened right around 3:30 this afternoon between the ranch exit and the Park County line. Troopers tell us the driver of a Suburban pulling a trailer reported that the trailer was swerving and that's what caused the SUV to roll.

West bound I-90 had to be closed for about an hour.  We're told the driver suffered minor injuries.

The second crash happened just after five.  Troopers say a car slowed down where the highway is down to one lane for the earlier accident and another car rear-ended it, pushing it down an embankment.

No one was injured in that accident, but it backed up traffic on the interstate.