| Year | Change |
| 1923 | Indiana, Columbus and Eastern abandons Medway to New Carlisle branch in January 1923. |
| 1923 | Springfield, Troy and Piqua (Springfield to Troy) abandons all passenger operations and freight operations west of Maitland. Remaining freight operation renamed "Springfield Suburban" |
| 1923 | Dayton, Springfield and Xenia Southern abandons Belmont to Beavertown branch |
| 1925 | Indiana, Columbus and Eastern abandons the line from Dayton to Union City on December 31, 1925. |
| 1926 | Dayton, Covington and Piqua abandons operations on November 5, 1926. |
