Yes, regional bus services connect the Laurentians to Montreal, but require a transfer.

How long does it take?

It takes about 75 minutes without traffic.

Is the A-25 bridge a toll road?

Yes, the A-25 bridge is a toll bridge; ensure you have an electronic transponder.

Can I take the train?

There is no direct train from Saint-Sauveur to Longueuil.

What is the best time to drive?

Mid-morning or late evening are the best times to avoid congestion.

Saint-Sauveur

Longueuil

Driving

Saint-Sauveur to Longueuil

Updated: 29 May 2026

Traveling from Saint-Sauveur to Longueuil is a straightforward 85-kilometer journey south through the heart of the Montreal metropolitan area. You will primarily follow Highway 15 South, transitioning through the island of Montreal via the Decarie Expressway or the A-13/A-40 bypass. Longueuil is located on the South Shore of the St. Lawrence River, directly across from Montreal. The trip duration is highly dependent on the time of day due to heavy traffic in the Montreal core. Expect a travel time of 75 to 90 minutes during off-peak hours.

Total Distance: 85 km driving distance; 70 km straight-line air distance.

Fastest Way

Driving via the A-25 bridge is the fastest route during non-peak hours.

Cheapest Way

Driving is the most practical and cheapest way to reach Longueuil.

Compare Saint-Sauveur to Longueuil Routes

Driving

Direct

Duration

1 hour 15 mins

Avg Price

15-25 CAD in fuel

Operator

Personal Vehicle

Route

A-15 S to A-40 E to A-25 S

Use the A-25 bridge to avoid the downtown Montreal tunnel traffic.

Travel Tips

Avoid Rush Hour
Traffic on the A-15 and A-40 is extremely heavy between 7-9 AM and 3-6 PM.
Use Waze
Real-time traffic apps are essential for navigating Montreal's complex highway system.
Metro Access
If you reach the Longueuil-Université-de-Sherbrooke station, you have direct metro access to downtown Montreal.
Construction
Check the Quebec 511 map for seasonal road closures on the bridges.
Parking
Public parking lots are available near the metro station for commuters.

Safety Tips

Lane Changes
Be prepared for aggressive merging on the A-40 highway.
Tunnel Safety
If taking the Louis-Hippolyte-La Fontaine tunnel, keep your lights on and maintain distance.
Visibility
Ensure your windshield wipers are in good condition for heavy rain.
Emergency
Keep a mobile phone charger in your vehicle for navigation assistance.