Iowa State Route 148 is the main north-south highway in Adams County. It runs from the Cass/Adams County, northwest of Mount Etna, to the Cass/Taylor County Line, south of Corning. This passes through the counties county seat. IA St Rt 148 passes through the following town in Adams County. Corning
IA St Rt 148 is not multi-plexed in Adams County. IA St Rt 148 intersects the following highway in Adams County. U.S. Rt. 34, at Corning.
NB IA St Rt 148 at the Adams/Taylor County Line. SB IA St Rt 148 south of Corning. A junction marker on WB U.S. Rt. 34. NB IA St Rt 148 north of U.S. Rt. 34.
