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Work begins on $29M bypass for Coxwell sewer

Construction begins this week on a permanent bypass for the Coxwell tunnel — the giant pipe buried under the Don Valley with a series of cracks that can’t be repaired because the sewer can’t be shut down and emptied.

Construction begins this week on a permanent bypass for the Coxwell tunnel — the giant pipe buried under the Don Valley with a series of cracks that can’t be repaired because the sewer can’t be shut down and emptied.

The tunnel, which will cost the city almost $29 million, will be functional by January. McNally Construction Inc. was awarded the contract in March.

The 4.8-kilometre sewer, built more than 50 years ago, handles sewage of 750,000 people living in the centre of the city.

The cracks, beneath Barbara Crescent, north of Coxwell Avenue and O’Connor Drive, were discovered by a robotic camera in late 2008.

 
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