IA 3 traverses central Iowa, connecting major highways US 71 and US 63. It passes through the cities of Storm Lake, Pocahontas, and Humboldt.
IA 3: DQ – IA 3 @ NW Arterial – North (34)
IA 3: DQ – IA 3 @ NW Arterial – North Zoom (35)
IA 3: RWIS – IA 3 MM 51 @ Cleghorn: R92: Cleghorn
IA 3: RWIS – IA 3 MM 17 @ Akron: R79: Akron
