| Bridge: | Severn River |
|---|---|
| Subdivision: | Newmarket |
| Mileage: | 99.56 |
| Location: | 
 |
| Date | Event |
|---|---|
| 1874-09 | N.E.Ry. opens from Washago to SevernStevens-1960, p. 410. |
| 1905 | G.T.Ry. constructs plate girder bridgeGTR.ND.1907, p. 75. |
| 1955-07-06 | C.N.Rys. opens Washago diversionC.N.R. File 4710-52-50This is at odds with Brown, which states that realignment was necessary to accommodate the widening of Highway 11 in the 1970s, and eliminate the need for a second crossingBrown-2002, p. 89. The "new" alignment is clearly present in a July 22, 1958 photographWilson-1998, p. 144. The Department of Highways Ontario (DHO) assumed the "Washago Diversion" of Highway 11 in February, 1955Cameron Bevers—correspondence. Further information on the construction of Highway 11 can be found at the "The History of Ontario's King's Highways" website.. |
| 1955-08c | C.N.Rys. removes bridgeTelegram from C.H. Harvey, Station Agent Washago to W.B. Edey, Superintendent Allandale Division, 1955-08-18. |