metrolinx construction

A massive new tunnel is being built beneath highway 401 in Toronto

Under 21 lanes of Highway 401 and 409 traffic, Metrolinx has started the construction of a GO Transit tunnel to add new tracks to the Kitchener line.

The construction will create two single-track tunnels, just two metres north of the existing GO Transit tunnel.

Once the project is complete, there will be  two-way, all-day GO service every 15 minutes on the line, with additional service during peak hours.

The “twin tunnel” will span 176 metres long, beneath “one of the busiest sections of highway in North America,” according to Georgina Collymore, Metrolinx's senior advisor.

She says the work shouldn’t impact highway traffic.

One significant change has already resulted from these construction plans. The Etobicoke North GO Station is closing down. Major changes would have had to be made to the station in order for it to remain open.

A new station will open at Highway 27 at Woodbine racetrack. This new station will be privately funded by Woodbine Entertainment.

The tunnel construction is projected to be completed by 2021 and has been valued at $116.9 million.

Lead photo by

Infrastructure Ontario 


Join the conversation Load comments

Latest in City

Police bust men who just tried to smuggle 59 illegal guns into Ontario using a boat

Toronto cyclists complaining major intersection has been a death trap for months

Ontario police reveal how some thieves have been able to steal so many luxury cars

Toronto traffic near pre-pandemic levels despite people still working from home

Ontario offering single-dose vaccine to the unvaccinated but it may not be that effective

Someone painted a yellow brick road and it's creating havoc on a Toronto street

Job prospects for recent grads in Toronto starting to improve as employment rate shrinks

Police stop van with front window filled with beer cans on highway west of Toronto