| DATE | EVENT |
| 1871 | The railroad period in
Trempealeau County begins with the building of the Northwestern into
Trempealeau |
| 1873 | Green Bay and Western built
through the Trempealeau Valley |
| 1883 | Northwestern Railroad was
extended to Galesville |
| 1886 | The Burlington Railroad built
in Trempealeau |
| 1887 | The Omaha Railroad built
through the Northern part of Trempealeau County |
| 1917 | Ettrick and Northern built from Ettrick to Blair |