Maintained by the Ministry of Transportation of Ontario
Length
91.4 km[2] (56.8 mi)
Existed
March 28, 1934[1]–present
Major junctions
South end
Highway 401 in Chatham-Kent
North end
Highway 402 in Sarnia
Location
Country
Canada
Province
Ontario
Highway system
Ontario provincial highways
Current
Former
400-series
← Highway 37
→ Highway 41
Former provincial highways
← Highway 39
King's Highway 40, commonly referred to as Highway 40, is a provincially maintained highway in the southwestern portion of the Canadian province of Ontario. The 91.4-kilometre (56.8 mi) route links Chatham and Sarnia via Wallaceburg, following close to the St. Clair River. The southern terminus is at Highway 401 south of Chatham, while the northern terminus is at Highway 402 in Sarnia. The portion of Highway 40 between Highway 401 and north of Wallaceburg is within the municipality of Chatham-Kent, while the portion north of there is within Lambton County.
Highway 40 was built as a depression-relief project in 1934. The original routing followed what is now the St. Clair Parkway, but was rerouted to create that scenic road in the mid-1970s. The Sarnia Bypass was opened in 1963 as Highway 40A and renumbered as Highway 40 by 1966; the original route through Sarnia became Highway 40B until it was decommissioned during the early-1990s. The route was extended to Highway 3 in Blenheim during the early 1970s; however this section was decommissioned during the Ontario highway transfers in 1998.
^Cite error: The named reference assumed was invoked but never defined (see the help page).
^Ministry of Transportation of Ontario (2016). "Annual Average Daily Traffic (AADT) counts". Retrieved January 1, 2021.
and 29 Related for: Ontario Highway 40 information
controlled-access 400-series highway in the Canadian province of Ontario. It stretches 828 kilometres (514 mi) from Windsor in the west to the Ontario–Quebec border...
King's Highway 11, commonly referred to as Highway 11, is a provincially-maintained highway in the Canadian province of Ontario. At 1,784.9 kilometres...
of Ontario. At its peak, Highway 7 measured 716 km (445 mi) in length, stretching from Highway40 east of Sarnia in Southwestern Ontario to Highway 17...
the Canadian province of Ontario. In conjunction with Highway 400, it links Toronto with the city of Greater Sudbury at Highway 17, via Parry Sound. It...
highway in the Canadian province of Ontario that connects the Blue Water Bridge international crossing near Sarnia to Highway 401 in London. It is one of multiple...
The Provincial Highway Network consists of all the roads in Ontario maintained by the Ministry of Transportation of Ontario (MTO), including those designated...
Ontario. Secondary Highway 527, commonly referred to as Highway 527 is a provincial maintained secondary highway in the Canadian province of Ontario....
King's Highway 71, commonly referred to as Highway 71, is a provincially maintained highway in the Canadian province of Ontario. The 194-kilometre-long...
The highway is patrolled by the Ontario Provincial Police and has a speed limit of 100 km/h (62 mph), except for the section south of Highway 401, where...
King's Highway 2, commonly referred to as Highway 2, is the lowest-numbered provincially maintained highway in the Canadian province of Ontario, and was...
Provincial highways in Ontario include all roads maintained by the Ministry of Transportation as part of the Ontario Provincial Highway Network. Although...
of Ontario. Highway 2A was an alternate route to Highway 2 in Chatham, London and Cornwall; these routes were all eventually redesignated. Highway 2A...
Canadian province of Ontario. It begins at the Manitoba boundary, 50 km (31 mi) west of Kenora, and the main section ends where Highway 417 begins just west...
a 400-series highway in the Canadian province of Ontario linking Toronto with the Niagara Peninsula and Buffalo, New York. The highway begins at the...
the Trans-Canada Highway. The western terminus of Autoroute 40 is located at the Ontario–Quebec border, where it continues as Highway 417 towards Ottawa;...
highway in the Canadian province of Ontario. It connects Ottawa with Montreal via A-40, and is the backbone of the highway system in the National Capital Region...
Ontario (/ɒnˈtɛərioʊ/ on-TAIR-ee-oh; French: [ɔ̃taʁjo]) is the southernmost province of Canada. Located in Central Canada, Ontario is the country's most...
King's Highway 24, commonly referred to as Highway 24, is a highway in the Canadian province of Ontario that currently begins at Highway 3 in Simcoe,...
King's Highway 10, commonly referred to as Highway 10, is a provincially maintained highway in the Canadian province of Ontario. The highway connects...
King's Highway 3, commonly referred to as Highway 3, is a provincially maintained highway in the Canadian province of Ontario which travels parallel to...
Secondary Highway 525, commonly referred to as Highway 525, is a provincially maintained secondary highway in the Canadian province of Ontario. It is a...
151.4 km long, this is the fourth-longest freeway in Ontario's 400 series network, after Highways 417, 400, and 401. The segment between Burlington and...
King's Highway 27, commonly referred to as Highway 27, is a provincially maintained highway in the Canadian province of Ontario. The Ministry of Transportation...
King's Highway 48, also known as Highway 48, is a provincially maintained highway in southern Ontario that extends from Major Mackenzie Drive in Markham...
Secondary Highway 519, commonly referred to as Highway 519, is a provincially maintained highway in the Canadian province of Ontario. The highway is 30.5 km...
King's Highway 4, also known as Highway 4, is a provincially maintained highway in the Canadian province of Ontario. Originally much longer than its present...
northeastern Ontario. Secondary Highway 572, commonly referred to as Highway 572, is a secondary highway in the Canadian province of Ontario which acts...
highway in the Canadian province of Ontario. A continuation of the municipal Don Valley Parkway (DVP) north of Highway 401, it connects Toronto with East...
Global Information
Highway 401 in Chatham-Kent
Highway 402 in Sarnia
