The Ministère des Transports et de la Mobilité durable is advising road users of a roadblock on Route 201 southbound at Coteau-du-Lac and Salaberry-de-Valleyfield this Friday, November 24, from 9am to 3pm. 

More specifically, the obstruction will be in place on the Monseigneur-Langlois bridge over the St. Lawrence River. It will be necessary to move the rigid guardrails for the winter period. 

The operation will close the right-hand southbound lane between 9 a.m. and 3 p.m. The length of the closure may vary depending on the duration of the operation, says the MTQ. 

Note that in the event of heavy precipitation, snow of more than 5 cm or freezing rain, the day's planned operation will be cancelled and postponed.