Truck tunnel can be done, but it would cost up to $2B
Ottawa Citizen

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By Jon Willing, Ottawa Citizen, August 17, 2016

A truck-diverting tunnel connecting Highway 417 with the Macdonald-Cartier Bridge would cost up to $2 billion to build, according to a study released Wednesday.

It’s possible to build a tunnel under Sandy Hill and Lowertown with two lanes in each direction, consultant Parsons says. The recommended alignment has the tunnel beginning at the intersection of Coventry Road and the Vanier Parkway, going under the Rideau River, and stretching 3.4 kilometres to the interprovincial bridge.