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Canada: Scarborough subway extension tunnelling stalled near Highway 401 for months
`unexpected soil conditions `
cover tunnel photo by: Matt Brown from London, England / CC BY
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Copyright 2019-2024 TunnelContact.com
| | `unexpected soil conditions `
cover tunnel photo by: Matt Brown from London, England / CC BY
Copyright 2019-2024 TunnelContact.com
https://toronto.citynews.ca/2025/04/02/scarborough-subway-extension-tunnelling-highway-401-metrolinx-update/
Scarborough subway extension tunnelling stalled near Highway 401 for months
toronto.citynews.caMetrolinx officials said the tunnel-boring machine for the Scarborough subway extension is still undergoing maintenance near Highway 401.