Québec 511 > Road Conditions > By Region and by Road > Autoroute 40

Autoroute 40

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
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.
40  

From :  Montréal Saint-Léonard borough

To : Charles-De Gaulle Bridge in Montréal

Roadway
Bare and Wet
Visibility
Good
40 
Entre Montréal et Terrebonne (Lachenaie), sur le pont Charles-De Gaulle Hindrance
Minor
Direction
West and east
From November 20, 2025 at 5 a.m.
to April 30, 2026 at 5 a.m.
40  

From :  Charles-De Gaulle Bridge in Montréal

To : Junction of highways 31 and 40 in Lavaltrie

Roadway
Bare and Wet
Visibility
Good
40 
Entre Terrebonne (Lachenaie) et Montréal, sur le pont Charles-De Gaulle Hindrance
Major
Direction
West
From January 8, 2026 at 11 p.m.
to January 9, 2026 at 5 a.m.
40  

From :  Junction of highways 31 and 40 in Lavaltrie

To : Maskinongé

Roadway
Bare and Wet
Visibility
Good
Montérégie
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.
40  

From :  Pointe-Fortune, Ontario border

To : Junction of highway 40 and route 201 in Rigaud

Roadway
Bare and Dry
Visibility
Good
40  

From :  Junction of highway 40 and route 201 in Rigaud

To : Vaudreuil-Dorion

Roadway
Bare and Wet
Visibility
Good
40  

From :  Vaudreuil-Dorion

To : Kirkland

Roadway
Bare and Dry
Visibility
Good
40 
Entre Vaudreuil-Dorion et Senneville (île de Montréal), sur le pont de l'Île-aux-Tourtes Hindrance
Major
Direction
West and east
From September 15, 2025 at 12:01 a.m.
to December 31, 2026 at 5 a.m.
Montréal
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.
40  

From :  Vaudreuil-Dorion

To : Kirkland

Roadway
Bare and Dry
Visibility
Good
40 
À Senneville Hindrance
Minor
Direction
West and east
From September 3, 2024 at 5 a.m.
to December 31, 2026 at 5 a.m.
40 
Entre Vaudreuil-Dorion et Senneville (île de Montréal), sur le pont de l'Île-aux-Tourtes Hindrance
Major
Direction
West and east
From September 15, 2025 at 12:01 a.m.
to December 31, 2026 at 5 a.m.
40 
À Senneville et à Montréal, entre chemin Senneville et boulevard des Anciens-Combattants Hindrance
Major
Direction
West and east
From January 8, 2026 at 9 p.m.
to January 9, 2026 at 6 a.m.
40  

From :  Kirkland

To : Junction of highways 40 and 520

Roadway
Bare and Dry
Visibility
Good
40  

From :  Junction of highways 40 and 520

To : Montréal Saint-Léonard borough

Roadway
Bare and Dry
Visibility
Good
40  

From :  Montréal Saint-Léonard borough

To : Charles-De Gaulle Bridge in Montréal

Roadway
Bare and Wet
Visibility
Good
40 
Entre Montréal et Terrebonne (Lachenaie), sur le pont Charles-De Gaulle Hindrance
Minor
Direction
West and east
From November 20, 2025 at 5 a.m.
to April 30, 2026 at 5 a.m.
Mauricie—Centre-du-Québec
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.
40  

From :  Maskinongé

To : Junction of highways 40 and 55

Roadway
Bare and Wet
Visibility
Good
40  

From :  Trois-Rivières Trois-Rivières-Ouest sector

To : Trois-Rivières Sainte-Marthe-du-Cap sector

Roadway
Bare and Wet
Visibility
Good
40  

From :  Trois-Rivières Sainte-Marthe-du-Cap sector

To : Deschambault-Grondines

Roadway
Bare and Dry
Visibility
Good
Québec (Capitale-Nationale)
Rivière-du-Loup - Saint-Siméon. Ferry service : Closed. January 4, 2026
at 4:47 p.m.
40  

From :  Deschambault-Grondines

To : Donnacona

Roadway
Bare and Dry
Visibility
Good
40  

From :  Donnacona

To : Neuville

Roadway
Bare and Dry
Visibility
Good
40  

From :  Neuville

To : Saint-Augustin-de-Desmaures, chemin du Lac

Roadway
Bare and Wet
Visibility
Good
40  

From :  Saint-Augustin-de-Desmaures, chemin du Lac

To : Junction of highways 40, 73 and 440

Roadway
Bare and Wet
Visibility
Good
40  

From :  L'Ancienne-Lorette

To : Junction of highways 40, 73 and 973

Roadway
Bare and Wet
Visibility
Good
40 
À Québec, entre l'A-73 Henri-IV et le boulevard Saint-Jacques Hindrance
Minor
Direction
West and east
From January 8, 2026 at 9 p.m.
to January 9, 2026 at 5 a.m.
40  

From :  Junction of highways 40, 73 and 973

To : Québec Beauport borough

Roadway
Bare and Wet
Visibility
Good