The crash investigation indicates the driver fell asleep behind the wheel, crashed into a tree then kept going before hitting a deck and a parked vehicle.
The Minnesota Pollution Control Agency has issued an Air Quality Alert for fine particles pollution. The Air Quality Index is expected to reach the 'red' or unhealthy category.
The truck was heading west on the highway in that area when it overturned onto its side and entered the ditch on the southside, the state crash report says.