Highway 40 has reopened after Saskatchewan RCMP officers respond to a rollover.According to the RCMP, the crash happened about six kilometres west of Hafford, and Highway 40 had been reduced to single-lane traffic.Read More:RCMP informant’s decades of spying on social reformers are chronicled in new book RCMP investigating suspicious death on Little Black Bear First Nation Border plan promises round-the-clock aerial surveillance, drug detection support While police did not say what caused the collision, fog patches have been reducing visibility and creating slippery roads in many parts of the province on Monday.The latest information on the closure can be tracked using Saskatchewan’s Highway Hotline.