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Highway 401 Tunnel Project

Sector: Tunnel • Location: Toronto, Ontario, Canada

Source: Toronto Life

Project
Planned

A proposed three-level, 55-kilometre tunnel beneath Highway 401 in Toronto aimed at tackling congestion. The project has faced concerns about safety risks such as potential roadway collapse and has an estimated cost of $130 billion. Preliminary work and a new feasibility study are planned to begin in spring 2026.

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Project Information

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The project “Highway 401 Tunnel Project” is an infrastructure initiative in the Tunnel sector, located in Toronto, Ontario, Canada. Taiyo aggregates data on it from Toronto Life.

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planned

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Description

Description

A proposed three-level, 55-kilometre tunnel beneath Highway 401 in Toronto aimed at tackling congestion. The project has faced concerns about safety risks such as potential roadway collapse and has an estimated cost of $130 billion. Preliminary work and a new feasibility study are planned to begin in spring 2026.

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Source

Source reliability

High

Data quality score

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Source

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