The purpose of the project is to accommodate the expansion of the Stouffville rail line through grade separations or road closure at seven crossings. These improvements will reduce traffic conflicts and enhance safety. The project will facilitate the GO expansion program, including the construction of the previously approved new track. To support GO Expansion along the Stouffville Corridor, the following crossings will be closed or grade separated:
Denison Street and Kennedy Road in City of Markham; and
Passmore Avenue, McNicoll Avenue, Huntingwood Drive, Havendale Road and Progress Avenue in City of Toronto.