 That all changed on January 1, 1969, when the Iowa State Highway Commission reorganized its primary highway system. The commission reassigned sections of highway with new numbers and removed duplicate numbers where they were unnecessary. In Iowa 150's case, the route was truncated at US 151 in Cedar Rapids. The duplications along US 151, Iowa 13, US 30, and Iowa 38 were removed and the remaining segment from Tipton to Davenport was renumbered Iowa 130. The route's new length was 97.96 miles (157.65 km).
