Here are the Montreal-area weekend road closures due to construction

A degraded pillar at the Saint-Pierre Interchange on Oct. 21, 2026. (Scott Prouse/CTV News)

Drivers in and around the Island of Montreal this weekend should be aware that closures due to roadwork will likely cause traffic headaches.

• LISTEN to CJAD 800 Radio for traffic updates every 15 minutes

Closures near the Île-aux-Tourtes Bridge and Louis-Hippolyte-La Fontaine Bridge are particularly notable, so planning routes before leaving is advisable.

Louis-Hippolyte-La Fontaine Bridge-Tunnel (A-25)

Northbound

• From Friday at 10 p.m. to Monday at 5 a.m., the bridge-tunnel will be closed between Exit 90 (R-132) on Highway 20 West in Longueuil and Sherbrooke Street in Montreal.

Southbound

• From Friday at 10 p.m. to Saturday at 8 a.m., from Saturday at 10 p.m. to Sunday at 9 a.m., and from Sunday at 10 p.m. to Monday at 5 a.m., the bridge-tunnel will be closed between Exit 4 (downtown, Souligny Avenue) in Montreal and Route 132 in Longueuil.
• Souligny Avenue will be closed in both directions between Dickson Street and Honoré-Beaugrand Street.

By default, 30 minutes prior, access from Route 132 East and West (Exits 89-N) and l’Île-Charron Street will be closed.

Félix Leclerc Highway (A-40)

• From Friday at 10 p.m. (eastbound) and 11 p.m. (westbound) until Sunday at noon, the Félix Leclerc Highway (A-40) will be closed in both directions at Anciens-Combattants Boulevard in Sainte-Anne-de-Bellevue and Senneville.

By default, to improve traffic flow westbound, from Saturday at 8 a.m. to Sunday at noon, Exit 44 (Morgan Boulevard) will be closed.

The Île-aux-Tourtes Bridge remains open. Whenever possible, the Ministry recommends using Highway 20.

Starting Monday, eastbound lanes on Highway 40 will be rerouted onto the new roadway in Senneville.

Côte-de-Liesse Road West/A-40 service road

• From Friday at 10 p.m. to Monday at 5 a.m., Côte-de-Liesse Road West will be closed at Gagnon Street, west of the Laurentians Highway Interchange.

Samuel-de Champlain Bridge

• On Saturday and Sunday, from 6 a.m. to 2 p.m., the left lane will be closed heading south on the bridge.

Roland-Therrien Boulevard (Longueuil)

• From Friday at 10 p.m. to Monday at 5 a.m., Roland-Therrien Boulevard will be closed to northbound traffic between d’Auteuil Street and Route 132.

Sir-Wilfrid Laurier Highway (R-158)

• From Friday at 9 p.m. to Monday at 5 a.m., Sir-Wilfrid Laurier Highway (R-158) will be closed in both directions between Highway 15 and Saint-Simon Road.

REM

• Scheduled work on the network will result in delayed openings, starting at 7:30 a.m. on Saturdays and Sundays.

Bridge Street / Victoria Bridge area

• Between Mill Street and Des Irlandais Street, at the railroad tracks, the weekend configuration will be two lanes open northbound and one lane southbound (toward the bridge). No changes to the traffic configuration on the Victoria Bridge.

Saint-Pierre Interchange (A-20 / R-138)

• Starting Oct. 26 and continuing through the end of 2026, partial and complete traffic restrictions will be in place at the interchange and on the municipal road network.

In the event of adverse weather conditions or operational constraints, the work may be cancelled or modified.