City crews are repairing yet another busted piece of Montreal's infrastructure Wednesday.

A water main near the intersection of De Lorimier Ave. and Marie-Anne St. broke overnight, flooding half the street.

The city dispatched a team to make emergency repairs which turned off water to the immediate neighbourhood.

That crew blocked off De Lorimier in both directions north of Marie-Anne during the morning rush hour while they turned off the taps, forcing drivers to detour around the block.

The street will be closed while crews dig to find the exact source of the leak. Michel Tanguay of the city of Montreal said that in many cases where water comes up through the street is a considerable distance from where the underground pipe is ruptured.