Parts of 16th Avenue N.W. will reopen Friday after water main repairs, city says

All of the repairs to the 11-kilometre-long water feeder main that ruptured earlier this month are complete, the excavation sites are backfilled and there's a fresh layer of pavement overtop.

Calgary's mayor said in hermorning briefingcommuters can expect16th Avenue N.W. to reopen Friday but not without a few bumps in the road.The city later clarified Thursday that sections of 16th Avenue N.W.will remain closed for a while longer.

"Please be prepared for a few bumps. We're missing just a little bit of pavement," Mayor Jyoti Gondeksaid Thursday during her regular morning briefing.

Gondek says the roadway is in "good enough shape" to reopenbut there's about two inches (5 cm) of pavement missing off the top.

WATCH | Road closures reopen after feeder main repairs:

City provides update on water main break

3 months ago

Duration 29:14

City officials provide update on the major feeder main break affecting Calgary's water supply.

On Thursday afternoon, Michael Thompson, the City of Calgary's general manager of infrastructure services, said the top layer of paving could not be completed due torain last night.

He also addressed a question related to why the city is filling in the excavation sites and repaving before the feeder main is back online.

"The pipe needs to be backfilled as a way to secure it," said Thompson.

He said crews are focused on rebuilding curbs, reinstalling traffic lights and cleaning the street in the areas where water main repairs occurred. Also, thecity reopened16th Avenue N.W. between 45th and 46th Streets on Thursday.

From 43rd Street N.W. to Bowness Road N.W., 16th Avenue will be closed in both directions so crews can monitor the feeder main, and traffic will be detoured onto Bowness Road.

Water restoration process begins

Earlier this week, city officials explained what the water restoration process would look like, highlighting that Calgary is still days away from its water supply returning fully back to normal.

"Remember, we're filling, we're flushing, we're testing, and then we are getting to stabilization," said the mayor.

Currently, the city is on Step 1 of the water restoration process.

Gondek added it will take about 36 hours and14 million litres of water to refill the 4.5-kilometre section of pipe, but if all goes well,total water restoration could be done ahead of the July 5 schedule.

"But this stage of the return to safe water is also one that presents the most risk," she said.

"We are refilling and reflowing a pipe that received a major shock when it broke on June 5. The shock from that rapid depressurization at that time means we must slowly bring the feeder main back up to regular flow and regular pressure."

3 weeks of water woes

The Bearspaw south feeder main a large pipe that carriesthe majority of Calgary's treated water from the Bearspaw Water Treatment Plant to the rest of the city ruptured three weeks ago.

Its rupture led to outdoor water restrictions, with the city also urging residents and businesses to cut back on their own use to maintain enough water for emergencies, such as fighting fires and use in hospitals.

City officials continue to warn that even though the repairs are complete, taps could run dry without continued conservation.

Gondek says 473 million litres of water were used in the Calgary area on Wednesday, slightly below the 480-million-litre safety threshold the city says it needs. She also clarified that the city using 25 per cent less water than usual means water usage would be around the 450-million-litre mark.

On Thursday afternoon, she saidCalgarians can expect water restrictions will be eased gradually once the water supply is stabilized, starting with indoor voluntary water restrictions and then outdoor mandatory water restrictions.

"It's hard for us to give you a timeline right now."

As of Thursday, there have been nearly 10,000 calls to the City of Calgary's 311 service about water misuse or the citywide fire ban, both of which are related to the water main break. Bylaw officers have issued 17tickets related to water misuse, and sixtickets related to the fire ban.