The Dayton Post of the Ohio State Highway Patrol received a call at 12:05 a.m. that a pedestrian was struck on the highway.
The man, later identified as Lawson, got out of a pickup truck stopped on the right shoulder of the highway and was in the roadway when he was struck by a 2019 Freightliner, the patrol stated.
The pickup truck had run out of gas and became disabled, troopers said.
The interstate was closed until shortly after 3 a.m. following the crash, which remains under investigation.
The Clay Twp. Police Department, Preble County Sheriff’s Office and Brookville Fire Department assisted at the scene.