Mark Wandro, former director of the Iowa Department of Transportation, will begin work Nov. 4 as Polk County administrator, replacing David Jones, who has been named city manager of Ankeny. Polk County supervisors approved a contract that will pay Wandro $185,000 a year. He most recently was executive vice president for Snyder & Associates Inc. Wandro was an assistant Polk County engineer before taking the position with Iowa Department of Transportation during the administration of Gov. Tom Vilsack.