Iowa State Route 122 runs east-west from Mason City to Interstate 35, near Clear Lake. IA St Rt 122 passes through the following town in Cerro Gordo County. Mason City IA St Rt 122 is multi-plexed in Cerro Gordo County. BUSN U.S. Rt. 18, near Mason City.
A BGS on SB I-35/IA St Rt 27. A BGS on EB BUSN U.S. Rt. 18/IA St Rt 122 at I-35/U.S. Rt. 18/IA St Rt 27. NOTE: how the IA St Rt 122 shield was place over the U.S. Rt. 18 shield. A street sign in Rural Cerro Gordo County. EB BUSN U.S. Rt. 18/IA St Rt 122 east of I-35. The western end marker near Clear Lake.
