Hwy 400 Hwy 400 to 409 Index Hwy 409   

Click on any King's 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: Hwy 401 at the Harwood Avenue Interchange between Toronto and Oshawa (June 15, 1961)
(Photo courtesy of Ontario Ministry of Transportation  -  © Queen's Printer for Ontario, 2012)

List of Ontario King's Highways Numbered 400 through 409:

Hwy 400
The King's Highway 400:

Toronto to Highway 69

1952-Present
Hwy 404
The King's Highway 404:

Toronto to Keswick

1977-Present

Hwy 400A
The King's Highway 400A:

Highway 400 to Highway 11

1959-Present
Hwy 405
The King's Highway 405:

QEW to Canada-US Border

1963-Present

Hwy 401
The King's Highway 401:

Windsor to Quebec Boundary

1952-Present
Hwy 406
The King's Highway 406:

Welland to St. Catharines

1965-Present

Hwy 402
The King's Highway 402:

Canada-US Border to London

1952-Present
Hwy 407
The King's Highway 407:

Burlington to Pickering

1997-Present

Hwy 403
The King's Highway 403:

Woodstock to Mississauga

1963-Present
Hwy 409
The King's Highway 409:

Highway 427 to Highway 401

1975-Present



Ontario Highway History - Home

List of Ontario's King's Highways



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