August 14, 2005: For an awkward time after the Second Great Decommissioning, Louisa and Des Moines counties tried this “neither-fish-nor-foul” naming convention. It was particularly odd in this case, when IA 79 had been J20 before 1980.
All of this has changed. US 34 is now on a freeway to the north, while J20 runs west. The designation for old 34 is unknown.