| Date | Event | Source | Notes |
|---|---|---|---|
| 1885-03-23 | Incorporated under Ontario Act 51 V Chap 71. | CNRHist | |
| 1893-05 | Line opened from Ottawa to Arnprior, 36 miles. Special train operated for officials. Bridge to be started soon. | Kennedy p171, quoting Ottawa Journal | |
| 1894 | Line opened from Ottawa to Renfrew, 55.5 miles | CNRHist |