Is there a train to Saint-Constant?

Yes, the Exo Candiac line serves Saint-Constant from Montreal, but there is no direct train from Saint-Germain.

How much is the A-30 toll?

The toll varies by vehicle class, typically ranging from 2 to 5 CAD for passenger cars.

The route is primarily industrial and suburban, focusing on efficiency rather than scenery.

Are there bus services?

Intercity buses exist between major hubs, but local transit to Saint-Constant requires multiple transfers.

What is the best time to leave?

Departing before 6:00 AM or after 9:30 AM avoids the worst of the South Shore congestion.

Saint-Germain-de-Grantham

Driving

Saint-Germain-de-Grantham to Saint-Constant

Updated: 29 May 2026

The journey from Saint-Germain-de-Grantham to Saint-Constant covers approximately 115 kilometers. You will primarily utilize Autoroute 20 West before transitioning to Autoroute 30 West. This route bypasses the dense traffic of downtown Montreal by utilizing the A-30 toll bridge. Expect a travel time of roughly 80 to 90 minutes depending on traffic near the Mercier Bridge. This corridor is a vital link for commuters moving between the Centre-du-Québec region and the South Shore.

Total Distance: 115 km driving distance; 95 km straight-line air distance.

Fastest Way

Driving via Autoroute 30 is the fastest method, taking approximately 80 minutes.

Cheapest Way

Driving your own vehicle is the most cost-effective method for this specific route.

Compare Saint-Germain-de-Grantham to Saint-Constant Routes

Driving

Direct

Duration

1 hour 20 minutes

Avg Price

20-30 CAD in fuel

Operator

Personal Vehicle

Route

A-20 W to A-30 W via Vaudreuil-Dorion exit.

Ensure you have an electronic transponder for the A-30 toll section to save time.

Travel Tips

Toll Awareness
The A-30 bridge requires a toll payment; check your account balance before departing.
Traffic Timing
Avoid the morning and evening rush hours near the Mercier Bridge to save 20 minutes.
Fuel Stops
Refuel in Drummondville before hitting the highway to avoid higher prices near Montreal.
Weather Check
Always check the Transports Québec website for road closures during winter storms.
Navigation
Use a GPS with real-time traffic updates to navigate the complex interchanges of the A-30.

Safety Tips

Winter Driving
Equip your vehicle with winter tires from December to March as mandated by Quebec law.
Speed Limits
Adhere strictly to the 100 km/h limit on Autoroute 20 to avoid heavy fines.
Emergency Kit
Keep a basic emergency kit with blankets and water in your trunk during colder months.
Visibility
Use your headlights during daylight hours to increase visibility on the busy A-30.