The Michigan Department of Transportation (MDOT) this afternoon closed M-64 between Bergland and Silver City in Ontonagon County as the roadway was compromised by rising water. A beaver dam blocked a culvert beneath the highway about five miles north of Bergland, and attempts to remove the blockage have been unsuccessful to this point. The Ontonagon County Road Commission and MDOT are on-scene, working on an emergency replacement of the culvert. It is not known how long it will take to reopen the highway at this point. The official detour route for M-64 traffic between Bergland and Silver City is on M-28, US-45, and M-64 west of Ontonagon.