Marion – Two wrecks on Interstate 57 in Williamson County this morning left one injured and backed up traffic for several hours. According to State Police Accident Reports, the first wreck happened at just before 1:40 this morning when a semi rear-ended an SUV on Southbound 57 near the weigh-station before proceeding onto and over the median and rolling over in the northbound lanes. The driver of the SUV, a Pennsylvania woman was hospitalized with minor injures. The second wreck involved a semi rolling over in the southbound lane of 57 near mile marker 52 at just before 5:00. The semi leaked from the trailer and traffic was delayed for several hours. All traffic is moving normally at this time.