U.S. Federal Route 151 is a north-south highway across Fond du Lac County. It runs from the Fond du Lac/Dodge County Line, near Waupun, to the Fond du Lac/Calumet County Line, near Bothertown. U.S. Rt. 151 passes through the following towns in Fond du Lac County. Waupun Lamartine Fond du Lac