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Bradford West Gwillimbury

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​​​​​Highway 400 & Line 5 Interchange  


This project is to build a new interchange on Highway 400 at Line 5. The project includes construction of a new bridge on Line 5 over the Highway, widening Line 5 to four lanes, and the installation of traffic signals, street lights, watermains and forcemains. The construction will also include realigning Sideroad 5, Coffey Road and Fraser Creek. 

(click the thumbnail at right for larger image)

Project Status & Update:

Construction is continuing on Line 5, and access across Highway 400 via Line 5 is expected to remain closed until late 2018. CLICK THE THUMBNAIL to go to YouTube and see the timelapse video of the demolition of the old bridge, which took place on April 8-9, 2017. 

​​​As of November 8, 2018, the Town is continuing to work with MTO on a final list of actions that are required before the road can be opened for public use. Please watch our Facebook page and local media for an official announcement.

​Contract Services:

  • Design: URS and Ainley Group
  • Construction: Dufferin Construction Company 
  • Contract Administration and Construction Inspection: Highway Construction Inspection Ontario Inc. 
Key Dates:
Environmental Assessment​2010
​Detailed Design2015​
​Construction Start ​2016
​Construction Completion ​2018


The Town of Bradford West Gwillimbury initiated a Schedule 'C' Municipal Class Environmental Assessment in 2009 after a Transportation Master Plan (OPA17) was completed in 2006. The Transportation Master Plan determined that existing traffic capacity was insufficient to accommodate projected population growth and future employment development. In 2010 the Municipal Class Environmental Assessment was completed and resulted in the selection of the preferred Parclo A-4 Interchange.