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Ontario Highway 413
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Ontario Highway 413
King's Highway 413, commonly referred to as Highway 413 and known as the GTA West Corridor or GTA West until 2021, is a 400-series highway and bus transitway currently under construction in the western Greater Toronto Area of the Canadian province of Ontario. The approximately 52-kilometre (32 mi) route was undergoing planning and analysis under an environmental impact assessment (EA) by the Ministry of Transportation of Ontario (MTO) and the Government of Ontario. The new four-to-six lane controlled-access highway will travel between the existing interchange of Highway 401 and the 407 ETR at the Halton–Peel boundary, and Highway 400 north of Vaughan. In addition, northerly extensions of Highways 410 and 427 will be built to connect with Highway 413.
The highway will serve as an outer ring road around the built-up areas of Brampton and Vaughan that would permit traffic travelling between Southwestern Ontario and Ontario's cottage country or Northern Ontario to bypass much of the Greater Toronto Area. However, the highway has attracted criticism for its environmental impacts, including concerns about its footprint on designated farmland in the Greenbelt, and its implications to encourage urban sprawl and induced demand.
Planning for the corridor began in the mid 2000s. However the EA was suspended in 2015, and the project shelved in February 2018 by the Liberal government of Kathleen Wynne. Following the 2018 Ontario general election in June of that year, the new Progressive Conservative government of Doug Ford announced the resumption of the suspended EA in November. Since then, several of the municipalities along the route have voiced their opposition to its construction. In April 2024, a previously announced federal EA was dropped by the Canadian government, with the federal and provincial governments to work together to minimize environmental impacts along the corridor instead. On August 27, 2025, Ford confirmed the provincial government has started construction on the highway.
The proposed route of Highway 413 was confirmed in the Technically Preferred Route report, which was published by Aecon and released on August 7, 2020. The approximately 52-kilometre-long (32 mi) route will consist of a four-to-six lane freeway as well as a transitway situated within a 170-metre-wide (560 ft) right-of-way. Fifteen interchanges were proposed. Four of the interchanges, including both terminuses, will be freeway-to-freeway. The corridor will arch around the west and north sides of the rural–urban fringe of Brampton, skirting the boundary between the regions of Halton and Peel before proceeding northwest into York Region.
The southwestern end will be at a freeway-to-freeway connection at the existing interchange between Highway 401 and Highway 407ETR at the tripoint of Halton Hills, Milton and Mississauga. It will meander northward, entering Brampton at an interchange with Winston Churchill Boulevard (Peel Regional Road 19). Crossing the Credit River immediately east of Georgetown, it will gradually curve northwest to parallel Old School Road east of Heritage Road. It will interchange with Bovaird Drive (Regional Road 107), which becomes Highway 7 to the west beyond the Brampton–Halton Hills boundary. Midway between Bovaird Drive and the next interchange at Mayfield Road (Peel Regional Road 14), the freeway will cross the CN Halton Subdivision, which carries the Kitchener line of GO Transit.
Beyond Mayfield Road, Highway 413 will make a broad curve to the northeast into Caledon, passing Mississauga Road (Peel Regional Road 1). Travelling roughly parallel to and midway between Mayfield Road and King Street (Peel Regional Road 9), it will interchange with Chinguacousy Road and pass north of Snelgrove and Mayfield West near an interchange with Highway 10. Just east of Mayfield West, a new extension of Highway 410, will meet Highway 413 at a freeway-to-freeway interchange. The new extension will also bypass the 4-kilometre (2.5 mi) extension north of Mayfield Road that opened in 2009. To the east will be a partial interchange with Bramalea Road. After interchanging with Airport Road (Peel Regional Road 7), the route will curve southeast, with an interchange at The Gore Road (Peel Regional Road 8), before re-entering Brampton to pass between the large unincorporated community of Bolton in Caledon and the Brampton neighbourhood of Castlemore. An interchange at Humber Station Road will provide an eastern access to Mayfield Road, which Highway 413 will cross.
Highway 413 will cross the Peel–York regional boundary at Regional Road 50 (former Highway 50) immediately north of Nashville Road (York Regional Road 49), where it will encounter a freeway-to-freeway interchange with an extension of Highway 427 northward from Major Mackenzie Drive (York Regional Road 25). Curving northeast, the route will encounter the CP MacTier Subdivision before crossing over the Humber River at the location of the Humber Valley Heritage Trail. Between the main branch and east branch of the Humber River will be an interchange with York Regional Road 27 (former Highway 27) north of Kleinburg. The final several kilometres will travel east, midway between Kirby Road and King Vaughan Road. After a partial interchange with Weston Road (York Regional Road 56), it ends at a freeway-to-freeway interchange with Highway 400.
The GTA West Corridor was first conceived as the GTA East–West Economic Corridor by the Ministry of Transportation of Ontario (MTO) in its Central Ontario Strategic Transportation Directions study in January 2002. The North–South Corridor Feasibility Study, prepared for the MTO and City of Brampton in September 2003, was first to recommend acquiring land for a future "higher order transportation facility" around Brampton. The report identified the need for a controlled-access highway as part of the city's ultimate transportation plan to serve western Brampton. Land was subsequently set aside for the next several years while the MTO analysed the need for both corridors.
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Ontario Highway 413
King's Highway 413, commonly referred to as Highway 413 and known as the GTA West Corridor or GTA West until 2021, is a 400-series highway and bus transitway currently under construction in the western Greater Toronto Area of the Canadian province of Ontario. The approximately 52-kilometre (32 mi) route was undergoing planning and analysis under an environmental impact assessment (EA) by the Ministry of Transportation of Ontario (MTO) and the Government of Ontario. The new four-to-six lane controlled-access highway will travel between the existing interchange of Highway 401 and the 407 ETR at the Halton–Peel boundary, and Highway 400 north of Vaughan. In addition, northerly extensions of Highways 410 and 427 will be built to connect with Highway 413.
The highway will serve as an outer ring road around the built-up areas of Brampton and Vaughan that would permit traffic travelling between Southwestern Ontario and Ontario's cottage country or Northern Ontario to bypass much of the Greater Toronto Area. However, the highway has attracted criticism for its environmental impacts, including concerns about its footprint on designated farmland in the Greenbelt, and its implications to encourage urban sprawl and induced demand.
Planning for the corridor began in the mid 2000s. However the EA was suspended in 2015, and the project shelved in February 2018 by the Liberal government of Kathleen Wynne. Following the 2018 Ontario general election in June of that year, the new Progressive Conservative government of Doug Ford announced the resumption of the suspended EA in November. Since then, several of the municipalities along the route have voiced their opposition to its construction. In April 2024, a previously announced federal EA was dropped by the Canadian government, with the federal and provincial governments to work together to minimize environmental impacts along the corridor instead. On August 27, 2025, Ford confirmed the provincial government has started construction on the highway.
The proposed route of Highway 413 was confirmed in the Technically Preferred Route report, which was published by Aecon and released on August 7, 2020. The approximately 52-kilometre-long (32 mi) route will consist of a four-to-six lane freeway as well as a transitway situated within a 170-metre-wide (560 ft) right-of-way. Fifteen interchanges were proposed. Four of the interchanges, including both terminuses, will be freeway-to-freeway. The corridor will arch around the west and north sides of the rural–urban fringe of Brampton, skirting the boundary between the regions of Halton and Peel before proceeding northwest into York Region.
The southwestern end will be at a freeway-to-freeway connection at the existing interchange between Highway 401 and Highway 407ETR at the tripoint of Halton Hills, Milton and Mississauga. It will meander northward, entering Brampton at an interchange with Winston Churchill Boulevard (Peel Regional Road 19). Crossing the Credit River immediately east of Georgetown, it will gradually curve northwest to parallel Old School Road east of Heritage Road. It will interchange with Bovaird Drive (Regional Road 107), which becomes Highway 7 to the west beyond the Brampton–Halton Hills boundary. Midway between Bovaird Drive and the next interchange at Mayfield Road (Peel Regional Road 14), the freeway will cross the CN Halton Subdivision, which carries the Kitchener line of GO Transit.
Beyond Mayfield Road, Highway 413 will make a broad curve to the northeast into Caledon, passing Mississauga Road (Peel Regional Road 1). Travelling roughly parallel to and midway between Mayfield Road and King Street (Peel Regional Road 9), it will interchange with Chinguacousy Road and pass north of Snelgrove and Mayfield West near an interchange with Highway 10. Just east of Mayfield West, a new extension of Highway 410, will meet Highway 413 at a freeway-to-freeway interchange. The new extension will also bypass the 4-kilometre (2.5 mi) extension north of Mayfield Road that opened in 2009. To the east will be a partial interchange with Bramalea Road. After interchanging with Airport Road (Peel Regional Road 7), the route will curve southeast, with an interchange at The Gore Road (Peel Regional Road 8), before re-entering Brampton to pass between the large unincorporated community of Bolton in Caledon and the Brampton neighbourhood of Castlemore. An interchange at Humber Station Road will provide an eastern access to Mayfield Road, which Highway 413 will cross.
Highway 413 will cross the Peel–York regional boundary at Regional Road 50 (former Highway 50) immediately north of Nashville Road (York Regional Road 49), where it will encounter a freeway-to-freeway interchange with an extension of Highway 427 northward from Major Mackenzie Drive (York Regional Road 25). Curving northeast, the route will encounter the CP MacTier Subdivision before crossing over the Humber River at the location of the Humber Valley Heritage Trail. Between the main branch and east branch of the Humber River will be an interchange with York Regional Road 27 (former Highway 27) north of Kleinburg. The final several kilometres will travel east, midway between Kirby Road and King Vaughan Road. After a partial interchange with Weston Road (York Regional Road 56), it ends at a freeway-to-freeway interchange with Highway 400.
The GTA West Corridor was first conceived as the GTA East–West Economic Corridor by the Ministry of Transportation of Ontario (MTO) in its Central Ontario Strategic Transportation Directions study in January 2002. The North–South Corridor Feasibility Study, prepared for the MTO and City of Brampton in September 2003, was first to recommend acquiring land for a future "higher order transportation facility" around Brampton. The report identified the need for a controlled-access highway as part of the city's ultimate transportation plan to serve western Brampton. Land was subsequently set aside for the next several years while the MTO analysed the need for both corridors.