Highway 427 Expansion Project

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Ranking for 2018: 75

Industry Sector: Transportation

Specific Sector: Highway

Range: $500,000,000 - $1 billion

Project Value: $

Provincial: $616 million

Government Funds Involved:

Funding Source: P3

Location: Toronto to Vaughan, Ontario

Estimated End Date of Substantial Completion: 2021

LEED: Certification


The expansion of Highway 427 is a 10.4-kilometre addition to one of Toronto’s 400-series highways, which currently runs from the Queen Elizabeth Way north to Highway 7 in the city’s west end. There are two sections to the project. The first is the widening of the highway from Finch Avenue to Highway 7 (four kilometres), expanding the highway from four and six lanes to eight lanes. This will include the addition of high-occupancy toll (HOT) lanes. The second section is the 6.4-kilometre extension of the highway from Highway 7 to Rutherford Road. This includes the creation of six- and eight-lane highway sections, three interchanges, and median HOT lanes. In 2018, work was done to clear the land north of the current highway, and bridge and culvert installation has begun at multiple points throughout the 10.4-kilometre extension. Completion of the project is expected in 2021.


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