Monday at 5:27 am Black Hawk County Dispatch was notified of a semi roll over with entrapment. Officers learned that the 25 year old driver, from Waterloo, had just made a delivery in downtown Cedar Falls when the accident occurred. He was taking the on-ramp from 1st Street to Southbound Highway 58 and lost control of his semi. The male was extricated from the semi and transported to Allen Hospital for treatment. Cedar Falls Public Safety was assisted by Mercy One Paramedics