A Cambridge intersection will remain shut down until Thursday following a major water main break.

Crews were called to the area of Elgin Street and Avenue Road around 5 a.m. Tuesday morning after a 16-inch water supply line ruptured.

Neighbourhoods across the city were initially affected by the disruption, but crews were able to isolate the line by 10 a.m., restoring regular service to all of the city except for the immediate area, which includes the Heritage Square plaza at Elgin and Avenue.

A water tanker has been brought in to supply water to the plaza until repairs are complete.

“We knew that we would be shutting down some of the water during the repair work and we wanted to be sure the commercial enterprises had what they needed to continue business as usual,” said City of Cambridge spokesperson Linda Fegan.

It’s not the first time water problems have hit the plaza. Dentist Pam Whelan recalled one time a few years ago when a water main burst underneath her building.

“It was a mess for probably about a month,” she said.

City of Cambridge spokesperson Linda Fegan says it will take some time to determine what caused the pipe to burst.

"Until we have fully removed all the equipment, taken a look at the pipes and started to reconnect the connections for the water main, we won't have an answer," she tells CTV.

The city expects repairs to take at least another day as more than 10 feet of pipe needs to be replaced, after which the road will be resurfaced.

Cambridge residents are asked to be on the lookout for cloudy water, and flush their pipes immediately if noticing it.

CTV’s Lee Boyadjian will have more on this story tonight on CTV News at Six.