A fiery crash shut down part of northbound US-31 just north of the Indiana state line in Berrien County on Tuesday.
Michigan State Police say the crash involved a semi and a box truck just after 1 p.m.
The northbound lanes of the highway were shut down at mile marker 2 and traffic was rerouted through a rest area.
The investigation found the northbound semi struck the box truck.
There were no reports of injuries.
