King's Highway 409, commonly referred to as Highway 409 and historically as the Belfield Expressway, is a
400-series highway in the
Canadian province
Canada has ten provinces and three territories that are sub-national administrative divisions under the jurisdiction of the Constitution of Canada, Canadian Constitution. In the 1867 Canadian Confederation, three provinces of British North Amer ...
of
Ontario
Ontario is the southernmost Provinces and territories of Canada, province of Canada. Located in Central Canada, Ontario is the Population of Canada by province and territory, country's most populous province. As of the 2021 Canadian census, it ...
that extends from
Highway 401 in
Toronto
Toronto ( , locally pronounced or ) is the List of the largest municipalities in Canada by population, most populous city in Canada. It is the capital city of the Provinces and territories of Canada, Canadian province of Ontario. With a p ...
to
Pearson International Airport, west of
Highway 427, in
Mississauga
Mississauga is a Canadian city in the province of Ontario. Situated on the north-western shore of Lake Ontario in the Regional Municipality of Peel, it borders Toronto (Etobicoke) to the east, Brampton to the north, Milton to the northwest, ...
. It is a short
freeway
A controlled-access highway is a type of highway that has been designed for high-speed vehicular traffic, with all traffic flow—ingress and egress—regulated. Common English terms are freeway, motorway, and expressway. Other similar terms ...
used mainly as a
spur route
A spur route is a short road forming a branch from a longer, more important road such as a freeway, Interstate Highway, or motorway. A Bypass route, bypass or beltway is not considered a spur route as it typically reconnects with another or the ...
for traffic travelling to the airport or Highway 427 northbound from Highway 401 westbound (and vice versa), as these route movements are not accommodated at the
complex interchange between Highways 401 and 427.
Planning for Highway 409 took place in the late 1960s amidst considerable controversy around its originally proposed path through the historic town of
Malton. Eventually, the route was changed to provide access to the airport instead of northward towards
Brampton
Brampton is a city in the Canadian Provinces and territories of Canada, province of Ontario, and the regional seat of the Regional Municipality of Peel. It is part of the Greater Toronto Area (GTA) and is a List of municipalities in Ontario#L ...
and was completed through the mid-1970s, opening in 1978. The significance of the route has increased over the years alongside expansion of the airport. In 2000, the
Greater Toronto Airports Authority (GTAA) purchased the section of the highway west of Highway 427 in order to modify the ramps leading into the airport.
The speed limit along Highway 409 is east of Highway 427 and west of it. It is patrolled by the
Ontario Provincial Police
The Ontario Provincial Police (OPP) is the State police, provincial police service of Ontario, Canada. The OPP patrols Provincial highways in Ontario, provincial highways and waterways; protects Government of Ontario, provincial government buil ...
east of the Toronto–
Peel
Peel or Peeling may refer to:
Places Australia
* Peel (Western Australia)
* Peel, New South Wales
* Peel River (New South Wales)
Canada
* Peel Parish, New Brunswick
* Peel, New Brunswick, an unincorporated community in Peel Parish
* Pee ...
boundary and by the
Peel Regional Police
The Peel Regional Police (PRP; ) provides policing services for Peel Region (excluding Caledon) in Ontario, Canada. It is the second largest municipal police service in the Greater Toronto Area in Ontario, and the third largest municipal force b ...
to the west of it. The original name of the freeway was derived from Belfield Road, which runs parallel to and north of the highway in Toronto from
Kipling Avenue
Kipling Avenue is a street in the cities of Toronto and Vaughan, Ontario, Vaughan in Ontario, Canada. It is a concession road, 6 concessions (12 km) west from Yonge Street, and is a major north–south arterial road. It consists of thre ...
to Atwell Drive.
Route description

Highway 409 serves as a direct link between Highway 401, Highway 427, and Pearson International Airport. While it is not intended as a commuter route, there are three exits serving industrial areas in
Etobicoke
Etobicoke (, ) is an administrative district and former city within Toronto, Ontario, Canada. Comprising the city's west end, Etobicoke is bordered on the south by Lake Ontario, on the east by the Humber River (Ontario), Humber River, on the ...
centred on the highway. Highway 409 also serves as the only connection between westbound Highway 401 and northbound Highway 427 and between southbound Highway 427 and eastbound Highway 401, as access between these routes is not provided at the 401–427 interchange.
Highway 409 begins at
Airport Road as the knotted flyovers from Pearson International Airport converge into the freeway from the various terminals.
The highway then turns northeast and encounters Highway 427. Through this section to Highway 427, the highway is maintained by the Greater Toronto Airport Authority (GTAA) and has a posted speed limit of .

As the highway passes under Highway 427, it turns southeast and takes on an east–west orientation. It passes over Carlingview Drive, and begins to descend into a trench, passing beneath Highway 27, two CN railway spurs, and Iron Street before returning to level grade. Around the interchange with
Martin Grove Road, the freeway twists slightly to the north and south between factories and warehouses.
At its eastern terminus, the eastbound Highway 409 crosses Kipling Avenue and two of its lanes merge onto each of the Highway 401 express and collector lanes. From Highway 401 westbound, two westbound collector lanes diverge and become the westbound lanes of Highway 409, while the remaining three westbound collector lanes join up with the westbound Highway 401 express lanes to form six lanes west of there. Highway 409 is also accessible from Highway 401 westbound express lanes.
History
Plans for Highway 409, originally known as the Belfield Expressway, were first presented in 1965 to the
Peel County (now Peel Region) council. In September 1968, three possible routes were submitted to the council. At the time, the town of
Malton, within Peel County, occupied the area of the planned expressway, having not yet been amalgamated with municipalities within Peel County to the south to create the City of Mississauga. The strip of land would require the
expropriation
Nationalization (nationalisation in British English)
is the process of transforming privately owned assets into public assets by bringing them under the public ownership of a national government or state. Nationalization contrasts with p ...
and demolition of 50 houses, as well as several businesses, a school, and two community parks. Citizens of the village formed a group to protest the freeway and to demand another route be taken. An above-grade alternative, similar to the
Gardiner Expressway
The Frederick G. Gardiner Expressway, commonly known as the Gardiner Expressway or simply the Gardiner, is a partially at grade and elevated municipal expressway in Toronto, Ontario, Canada. Running close to the shore of Lake Ontario, it exten ...
was proposed, as well as a tunnel under the airport.
However, at the same time, Toronto was embroiled in heated debate over the fate of its
planned urban expressway system. When the
Spadina Expressway was cancelled in 1971, the planned Belfield Expressway was completely revised. Instead of continuing northwest from Highway 427 and through Malton's four-corners at Derry Road and Airport Road towards
Brampton
Brampton is a city in the Canadian Provinces and territories of Canada, province of Ontario, and the regional seat of the Regional Municipality of Peel. It is part of the Greater Toronto Area (GTA) and is a List of municipalities in Ontario#L ...
, it would curve southwest and provide access to the developing Toronto International Airport. At the recently opened interchange between Highway401 and Highway427, the off-ramp from westbound Highway401 to Carlingview Drive was temporarily signed as "Airport Expressway", since Carlingview Drive had a temporary on-ramp to northbound Highway427 near the Renforth Drive underpass but that on-ramp was closed in the early 1970s. Direct access from westbound Highway401 to northbound Highway427 would be restored a few years later with the Belfield Expressway which had greater capacity then the short-lived Carlingview ramps.
Before plans for the new route were finalized, a flyover was built to provide access from Belfield Road to eastbound Highway 401, opening on October 7, 1968.
Because the lands on which the freeway was to be built were occupied, the province elected to apply to
expropriate the
right-of-way in April 1972.
Construction was underway by the end of the year, with the first contracts constructing the trench section near Highway 27. Structures,
drainage
Drainage is the natural or artificial removal of a surface's water and sub-surface water from an area with excess water. The internal drainage of most agricultural soils can prevent severe waterlogging (anaerobic conditions that harm root gro ...
and
grading were completed west of Iron Street to Carlingview Avenue in 1974. In June of that year, contracts were awarded for the same work east of Iron Street to Highway 401. When this was completed in 1975, a paving contract was awarded from Carlingview Avenue to Highway 401.
Highway 409 first opened to traffic by 1976, with temporary ramps at Carlingview Avenue acting as the western terminus. That year the final contracts were awarded to construct portions of the Highway 427 interchange and connect Highway 409 with the airport road system.
The entire freeway opened on August 25, 1978.

The flyover ramp, which connects southbound Highway 427 with eastbound Highway 409 was constructed in the early 1990s. Prior to that, an at-grade intersection crossed the northbound lanes of Highway 427, controlled by a
traffic signal
Traffic lights, traffic signals, or stoplights – also known as robots in South Africa, Zambia, and Namibia – are signaling devices positioned at intersection (road), road intersections, pedestrian crossings, and other locations in order t ...
. This signal had the longest cycle of any traffic light in Toronto during its years of operation.
The portion of Highway 409 west of Highway 427 is owned and operated by the
Greater Toronto Airports Authority (GTAA). Despite its private ownership, the section east of Airport Road is still considered a part of Highway 409.
The GTAA purchased this section of the highway in 2000 in order to rebuild the approaches to the
new Terminal 1 at Toronto Pearson Airport.
Until 2008, Highway 409 remained almost unchanged from its original construction. However, beginning on July 10, 2008, traffic access was restricted to the outermost lanes. The steel "W" guardrail and truss light posts in the median were replaced by an
Ontario Tall Wall barrier with a
high-mast lighting
High-mast lighting is a tall pole with lighting attached to the top pointing towards the ground, usually but not always used to street light, light a highway or recreational field. It is used at sites that require lighting over a large area. ...
system. Construction was carried out over several years and was scheduled for completion on September 1, 2011.
Exit list
References
External links
Video of Highway 409 westbound* https://www.thekingshighway.ca/PHOTOS/Hwy409photos.htm Old photos of Highway 409, courtesy of Ontario Ministry of Transportation © King's Printer for Ontario, 2013]
{{Ontario King's Highways
400-series highways, 09
Roads at Toronto Pearson International Airport
Toronto highways