Directions to Ottawa Foods Division 325 Williamstown Rd. Ottawa, OH 45875 Directions from I-75:South on I-75 to Route 224/15 West (Findlay). Go West into Ottawa. In downtown, turn left on Oak Street. Turn left on Williamstown. Plant is on the right hand side. Or, from 224/15 West, go South on Route 65. Cross river (East) on Williamstown Road (Approx. 65 miles)