A 65-year-old Marshfield man was killed in a two-vehicle head-on collision on I-44 two miles west of Lebanon at 10:30 Sunday morning. Kenneth B. Harris was driving westbound in the eastbound lane of the interstate when he ran head-on into a tractor-trailer driven by 45-year-old Amir Kajtazovic of Des Moines Iowa. Harris was pronounced dead at the scene. Kajtazovic was taken to Cox South Hospital in Springfield with moderate injuries. Both drivers were wearing a seatbelt. The accident had both lanes of the interstate closed for several hours, rerouting traffic through the south side of Lebanon.