Cedar Falls Public Works has closed a section of River Bluff Drive as they begin sanitary sewer rehabilitation work. Crews will be installing a new manhole structure which will close the roadway from 1605 to 1607 River Bluff Drive. Residents in that area can place garbage and yard waste cans at either end of the closure for pickup. Walkers and vehicles are asked to stay away from the area. The work is expected to last for about a week.