A St. Cloud man was killed Wednesday night when his motorcycle collided with a tractor. It happened at 8:30pm on Highway 10 in Benton County. 45-year-old John Mihlbauer hit a mounted mower blade on the rear of the Ford tractor, and was dead at the scene. The tractor did have 2 flashing lights and a rotating amber light on it at the time. The driver of the tractor was not hurt.