A broken valve that caused a water main leak at Swan Lake and Shed Roads in Bossier City has led to some erosion of the roadway. So the city has closed the southbound lane of Swan Lake from Hazel Jones to Shed while repairs are made there. Southbound traffic is being detoured onto Hazel Jones Road. The closure is expected to remain in effect through the weekend. The northbound lane of Swan Lake will remain open while work on replacing the broken valve is completed.