Iowa State Route 346 this runs from U.S. Rt. 18 to U.S. Rt. 218/Iowa State Route 27, near Nashua. IA St Rt 346 passes through the following town in Chickasaw County. Nashua IA St Rt 346 is not multi-plexed in Chickasaw County. IA St Rt 346 intersects the following highways in Chickasaw County. U.S. Rt. 218, near Nashua. Iowa State Route 27, near Nashua. U.S. Rt. 18, near Fredericksburg.
