A State Patrol trooper checking on a minivan parked on the shoulder of Interstate 39/90/94 near Lodi early Tuesday morning found a man deceased inside the minivan.
It happened at about 6 a.m. on the Interstate near the Highway 60 interchange, the State Patrol said.
The trooper stopped to check on the Kia Sedona minivan on the shoulder of the highway, and he found the lone male occupant in the van.
The Columbia County Sheriff's Office, the Arlington EMS and the Columbia County Medical Examiner's Office assisted at the scene.
The cause of death was not disclosed.
The name of the man was not released pending notification of family.