duplicate route numbers where they could. Since it crossed the state line into Missouri, the southern half of the route was renumbered Iowa 5 to match Missouri Route 5. Throughout Des Moines, Iowa 60 overlapped many other routes, so the designation was removed between the I-35/now-Iowa 5 interchange to the intersection with Iowa 141 in Granger. The section of Iowa 60 north of Granger became Iowa 17. Since becoming Iowa 17, the route has changed little. By 1976, paving was completed and the southern end of the route was converted into an interchange with Iowa 141. By the end of the 1970s, the highway was rerouted around Webster City when US 20 was realigned onto a new freeway. Major intersections References 017