A couple of road projects on some area state highways will begin this week. In St. Clair County’s Fort Gratiot Township, M-136 between State and Campbell will be closed to all traffic starting tomorrow for culvert replacement. M-136 is expected to reopen to through traffic Thursday. Meanwhile in Lapeer County near Brown City, M-90 is also expected to be closed to through traffic also for a culvert replacement. Traffic on M-90 between Burnside Road and Cade Road will be detoured and that project is expected to be completed on Saturday.