October 26th, 2020

Workers battle weather delays to finish sewer upgrade

By Mabell, Dave on December 12, 2019.

Dave Mabell

Lethbridge Herald


Fall snowstorms are no help to contractors building upgrades to Lethbridge’s underground utilities.

Despite that, work on a $10-million wastewater system improvement in north Lethbridge is largely complete.

Project technologist Jeremy Charlesworth says McNally Construction is still trying to get a few more things done before taking a break over winter.

“All that’s left to complete is the last stretch of watermain to the wastewater treatment plant along with a vault up by Legacy Ridge,” he says.

“They’re hoping to have both of those completed in the next week or two, and then all that will be left for spring is repairing the surface.”

Earlier, a snowfall just as workers were preparing to connect a new main to an existing line next to Legacy Regional Park left a section of 13 Street North closed for several weeks. The contract called for the new line to extend under 13 Street at Grace Dainty Road, to connect with a previously installed line serving northeast sections of the city.

After that, contractors had to undertake a major “bypass pumping” procedure, redirecting all the existing flow away from an existing siphon and away from the construction area so work could proceed.

That was required to complete the new lines’ tie-in at the treatment plant, Charlesworth explains.

With that completed, he says, the entire siphon is operational, “with just some minor things here and there to take care of.”

“There were a few challenges in getting the lines hooked up, but McNally did a great job working long hours to get the connections made,” Charlesworth reports.

“We had larger-than-anticipated flow at some points but they were able to keep everything moving.”

Surface restoration has begun, with large areas levelled and hydro-seeded with grass.

“But with the current weather we’re seeing, it’s looking like surface works won’t be completed until spring.”

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