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Québec 511 > Road Conditions > By Region and by Road > Autoroute 640

Autoroute 640

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
Laurentides—Lanaudière
Alternating traffic R-343 at height rivière L'Assomption, SOUTHBOUND and NORTHBOUND, Saint-Paul, undetermined period. Reason : Inspection. April 14, 2026
at 2:49 p.m.
Contraflow traffic rue Baby on the bridge, 1 lane in each direction. Lane width: 3.2 meters, WESTBOUND and EASTBOUND, Joliette, undetermined period. Reason : Inspection. September 23, 2025
at 10:13 a.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.
640 
 Entre le chemin Principal à Saint-Joseph-du-Lac et le boulevard des Promenades à Deux-Montagnes Hindrance
Major 		Direction
West and east 		From May 21, 2026 at 5 a.m.
to July 31, 2026 at 9 p.m.
640 
 À Saint-Eustache, à la hauteur de la 25e Avenue Hindrance
Major 		Direction
West and east 		From July 3, 2026 at 10:30 p.m.
to July 6, 2026 at 5 a.m.
640 
 À Saint-Eustache, dans la sortie 14 (25e Avenue) Hindrance
Minor 		Direction
West 		From July 5, 2026 at 10 p.m.
to July 6, 2026 at 5 a.m.
640 
 À Boisbriand, vers l'A-15 NORD Hindrance
Major 		Direction
East 		From July 3, 2026 at 9 p.m.
to July 5, 2026 at 8 a.m.
640 
 À Blainville et Rosemère, accès à partir du chemin du Bas-de-Sainte-Thérèse et boulevard des Châteaux Hindrance
Minor 		Direction
West 		From July 5, 2026 at 11:30 p.m.
to July 6, 2026 at 5 a.m.