NB Adams County N61 south of Prescott.
WB Taylor County J35 near Gravity.
Counties :
- Adair County
- Adams County
- Allamakee County
- Audubon County
- Black Hawk County
- Bremer County
- Buchanan County
- Cass County
- Cedar County
- Cerro Gordo County
- Clarke County
- Clayton County
- Clinton County
- Dallas County
- Delaware County
- Des Moines County
- Dubuque County
- Floyd County
- Fremont County
- Guthrie County
- Harrison County
- Iowa County
- Jackson County
- Jasper County
- Johnson County
- Jones County
- Lee County
- Linn County
- Lyon County
- Marshall County
- Mitchell County
- Mills County
- Monona County
- Muscatine County
- Osceola County
- Page County
- Pottawattamie County
- Poweshiek County
- Scott County
- Shelby County
- Story County
- Tama County
- Taylor County
- Union County
- Van Buren County
- Warren County
- Washington County
- Woodbury County
- Worth County