Parc Avenue in downtown Montreal is closed to traffic between Sherbrooke and Milton streets, after a larger-than-usual pothole appeared in a northbound lane Wednesday afternoon.
At first, just the northbound lanes were closed to traffic. Later, Parc Avenue was closed in both directions as City of Montreal work crews assessed the situation.
The emergency closure was announced Wednesday evening by Montreal's mobility management division.
The cause of the crater-like hole is still not known, but the city has managed to block it off with an assortment of traffic cones and orange tape.
Parc Avenue will remain closed through the night and repair work is scheduled to begin Thursday morning, according to Montreal spokesperson Mélanie Gagné.
The arterial road serves as a key north-south route through the city.
STM spokesperson Amélie Régis said the 80, 129, 480 and 365 buses are being rerouted until further notice.