Keith Ericson, 49, was struck and killed by an Oregon Department of Transportation mower on Tuesday morning.
Police said his last known addresses were in Rapid City, South Dakota and Santa Monica, California.
An ODOT employee, mowing on the shoulder of Highway 42 near milepost 59, hit the man, who is believed to have been sleeping in the grass.
Oregon State Police responded to the scene, between Tenmile and Camas Valley, at approximately 9:15 a.m.
ODOT called for Emergency Medical Services and attempted first aid, but the man died on the scene.
Oregon State Police was assisted by the Douglas County Sheriff’s Office, Tenmile Fire Department and Douglas County Fire District 2.