 It became part of Iowa 64 in the 1903s and it received its current route number in 1969.Iowa 330 is mostly a four-lane, divided expressway along much of its length.In conjunction with U.S. Route 65 in Iowa (US 65), Iowa 14 and US 20, Iowa 330 is commonly used as a connector between Des Moines and the Waterloo–Cedar Falls area.