Ontario Premier Doug Ford is dismissing a study commissioned by his government, which warned tunnelling under Highway 401 came with “potential for roadway collapse,” suggesting the 2021 research is “old.”

Ford has publicly pushed to build a tunnelled expressway under Highway 401 to alleviate congestion since September 2024, but internal documents obtained by Global News show work on the idea began as early as 2019 .

As part of the previous, still unreleased studies into the concept, a 2021 analysis found the idea could pose “risks to public safety” and came with “potential for roadway collapse.”

Ford, however, is pressing ahead with the plan. He has launched a new feasibility study, swearing the tunnel will get built and brushing off the warnings.

“That’s old,” he said of the th

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