The second lasted from 1926 to January 1, 1969, and was a highway that went south from Milton to the Missouri border. The third version of Iowa Highway 23 lasted from January 1, 1969, until July 16, 1997, and went from Eddyville to Ottumwa.
The second spanned from 1926 to January 1, 1969, and was a road that ran south from Milton to the Missouri border. The third iteration of Iowa Highway 23 operated from January 1, 1969, until July 16, 1997, and connected Eddyville to Ottumwa.