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Québec 511 > Road Conditions > By Region and by Road > Route 340

Route 340

Road Conditions
Roadway
Bare (dry or wet)
Partly snow covered, snow packed
or ice covered
Snow covered, snow packed
or ice covered
Visibility
Good
Fair
Poor
Roadwork
Minor hindrance
Major hindrance
Other informations
Warning
Trucks prohibited
Ferry
Border crossing
Thaw
Thaw period From March 16, 2026
to May 15, 2026
Thaw period From April 13, 2026
to June 12, 2026
Thaw period From April 20, 2026
to June 19, 2026
Montérégie
In Montreal, starting at 1 p.m. today, Friday, May 1st, the area bounded by de la Montagne Street, Peel Street, René-Lévesque Boulevard, and Avenue des Canadiens-de-Montréal will be closed until late this evening. Reason: Special event

Plan your trips!		 May 1, 2026
at 12:39 p.m.
Sorel-Tracy - Saint-Ignace-de-Loyola: Modified schedule from May 4th until mid-May. Ferries depart from Saint-Ignace-de-Loyola on the hour and from Sorel-Tracy on the half hour. Reason: One ferry in operation. Consult the Société des traversiers du Québec website. Ferry service : Open. April 30, 2026
at 1:27 p.m.
Louis-Hippolyte-La Fontaine tunnel

Height clearance reduced to 4.3 meters since May 5, 2025. Recreational vehicles, among others, make sure to respect the height clearance before including the tunnel in your itinerary. . 		June 18, 2025
at 11 a.m.
340 
 À Vaudreuil-Dorion, à la hauteur de l'accès A-30 Hindrance
Major 		Direction
West and east 		From May 1, 2026 at 8 p.m.
to May 4, 2026 at 5 a.m.
340 
 À Vaudreuil-Dorion, vers l'A-30 EST Hindrance
Major 		Direction
West and east 		From May 3, 2026 at 9 p.m.
to May 4, 2026 at 5 a.m.
340 
 À Vaudreuil-Dorion Entre ch. de la Petite-Rivière et boul. de la Gare Hindrance
Minor 		Direction
In one direction at a time 		From May 3, 2026 at 9 p.m.
to May 4, 2026 at 5 a.m.
340 
 À Vaudreuil-Dorion, entre l'A-30 et le boulevard de la Gare Hindrance
Major 		Direction
West and east 		From April 19, 2026 at 9 p.m.
to June 1, 2026 at 5 a.m.