A single vehicle traffic crash this morning slowed traffic for around an hour in Adams Township. Authorities were called to the intersection of Milnes Road and Addison Road just after 8:30am. There they found a pick-up truck overturned on the west side of the roadway, with three persons suffering what authorities described as minor to critical injuries. The roadway was closed until just after 9am. Hillsdale County Sheriff’s Officers were assisted on the scene by the North Adams Fire Department. The accident remains under investigation.