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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
Current Warnings
Louis-H.-La Fontaine Tunnel
Contraflow traffic (north tube), 2 lanes northbound and only one southbound.
Northbound lanes width reduced to 3.2 m. Cause: tunnel repair.

Heavy vehicles:
Coming from A-20 West/A-25 North (towards Montréal), right lane MANDATORY from De Mortagne Blvd.

Coming from A-25 South (towards Longueuil), right lane PROHIBITED from Sherbrooke Street. 		March 6, 2025
at 2:21 p.m.
Thaw
Thaw period From March 24, 2025
to May 2, 2025
Thaw period From March 24, 2025
to May 16, 2025
Thaw period From April 14, 2025
to May 23, 2025
Laurentides—Lanaudière
Work on the Laviolette Bridge will resume during weekday nights and sometimes on weekend nights until fall 2025.

Check the roadworks in detail for information, including the planned times of the obstructions.		 March 28, 2025
at 11:06 a.m.
Additional Information:
640  

From :  Saint-Joseph-du-Lac

To : Saint-Eustache

 Roadway
Bare and Wet 		Visibility
Good
640 
 À Deux-Montagnes, avant la sortie 2 (chemin Principal) Hindrance
Major 		Direction
West 		From April 29, 2025 at 9 p.m.
to April 30, 2025 at 5 a.m.
640 
 À Deux-Montagnes Après l'entrée du boulevard de la Grande-Allée Hindrance
Minor 		Direction
East 		From April 27, 2025 at 12:01 a.m.
to May 30, 2025 at 11:59 p.m.
640 
 À Sainte-Marthe-sur-le-Lac, entre la sortie 8 (boulevard des Promenades) et l'entrée de la rue Saint-Eustache Hindrance
Major 		Direction
East 		From April 29, 2025 at 10 p.m.
to April 30, 2025 at 4:30 a.m.
640  

From :  Saint-Eustache

To : Bois-des-Filion

 Roadway
Bare and Wet 		Visibility
Good
640 
 À Boisbriand, sur la voie de desserte, entre la bretelle de sortie pour le boulevard du Faubourg et l'entrée du boulevard de la Grande-Allée Hindrance
Minor 		Direction
West 		From April 29, 2025 at 10 p.m.
to April 30, 2025 at 4 a.m.
640  

From :  Bois-des-Filion

To : Junction of highways 25 and 640 in Terrebonne

 Roadway
Bare and Wet 		Visibility
Good
640 
 À Terrebonne L'entrée du boulevard Marcel-Therrien et Montée des Pionniers pour A-640 est Hindrance
Minor 		Direction
West and east 		From March 6, 2025 at 5 a.m.
to December 31, 2025 at 9 p.m.
640  

From :  Junction of highways 25 and 640 in Terrebonne

To : Charlemagne

 Roadway
Bare and Wet 		Visibility
Good