Contra Costa County Public Works Department will perform work on Marsh Creek Road from Deer Valley Road to the Clayton City limits, from September 5 through October 5, 2017. The work will occur Monday through Thursday between the hours of 8:30 a.m. and 4:00 p.m. to shape slopes, repair shoulders and erosion along the road edge. The work may be rescheduled based on weather conditions. Electronic message boards will alert drivers of the scheduled work. There will be traffic control through the work area and drivers can expect delays of 10-15 minutes.