Clarksville Now Update, 4:50 p.m.: Clarksville Police have just reopened Riverside Drive. Drivers should expect traffic to remain backed up or slow as traffic clears. Update, 4:40 p.m.: With rush hour approaching, Riverside Drive remains closed, as Lifeflight has had to land on the highway to transport one of the injured. Two others were transported to Tennova Healthcare-Clarksville. A medical evacuation helicopter lands on Riverside Drive following a wreck on May 24, 2021. (Michael Patterson, CPD) Traffic is backed up on Second Street. Previously: CLARKSVILLE, TN (CLARKSVILLE NOW) – Riverside Drive is closed in both directions after a wreck that left one vehicle flipped on its side.