Hwy 580 Sign Graphic Hwy 580 to 599 Index Title Graphic Hwy 599 Sign Graphic   

Click on any Secondary Highway route marker sign from the menu below to see a detailed history and a link to a route map of that highway, showing historical re-routings and realignments. Most of the route maps are still under development and will be posted later. For all other Ontario Highways, please return to the Main Highway List. Enjoy!

Photo at Right: Completed grading on Hwy 621 near Morson (1959)
(Photo courtesy of Ontario Ministry of Transportation  -  © Queen's Printer for Ontario, 1959)

List of Ontario Secondary Highways Numbered 580 through 599:

PLEASE NOTE: Not all Secondary Highways are listed yet. Additional routes will be added in 2021.

Hyperlink to Hwy 599 History Page
Secondary Highway 599:

Ignace to Central Patricia


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