Iowa State Route 141 runs east-west across Southern Woodbury County. This runs from Interstate 29 to the Woodbury/Monona County Line, near Smithland. IA St Rt 141 passes through the following town in Woodbury County. Smithland IA St Rt 141 is not multi-plexed in Woodbury County. IA St Rt 141 intersects the following highways in Woodbury County. Interstate 29, near Sloan. Iowa State Route 31, at Smithland.
