IA 4 traverses central Iowa, connecting US 30 and US 20, passing through the cities of Rockwell City, Sac City, and Emmetsburg.
IA 4: RWIS – IA 4 MM 25 @ Jefferson: R25: IA 4 Bridge
IA 4: RWIS – IA 4 MM 25 @ Jefferson: R25: IA 4 Bridge Approach
IA 4: RWIS – IA 4 MM 25 @ Jefferson: R25: IA 4 Road
IA 4: RWIS – IA 4 MM 25 @ Jefferson: R25: IA 4 SB
IA 4: RWIS – IA 4 MM 25 @ Jefferson: R25: North View
IA 4: RWIS – IA 4 MM 25 @ Jefferson: R25: North Zoom
IA 4: RWIS – IA 4 MM 25 @ Jefferson: R25: South View
IA 4: RWIS – IA 4 MM 25 @ Jefferson: R25: South Zoom
