Here's what road closures are in effect around Montreal this weekend

Road closure in Montreal. FILE PHOTO (Daniel J. Rowe/CTV News)

Commuters hitting the roads in and around Montreal are being advised that several closures are in effect over the weekend due to construction, as well as a demonstration downtown and the Marathon Beneva de Montréal.

Here is a summary of what to expect on the roads.

HONORÉ-MERCIER BRIDGE

From Saturday 4 a.m. to Sunday 1 a.m.

• Closure of the bridge towards the South Shore ( R-138 west, upstream bridge ) and contraflow (1 lane per direction) on the bridge towards Montreal.

SAINT-PIERRE INTERCHANGE AND R-138

From Friday 11:59 p.m. to Monday 5 a.m.

• Closure of the ramp leading from the R-138 east (coming from the Honoré- Mercier bridge) to the A-20 east (towards the city center)

Detour : via the ramp for A-20 west, junction for 1re Avenue, U-turn at the traffic light, boulevard Montréal- Toronto east and ramp for A-20 east, after avenue Saint-Pierre .

EXCHANGE A-10 / R-132 (Brossard)

From Friday 11:59 p.m. to Saturday 5 p.m.

• In Brossard , complete closure of the ramp leading from the A-10 west (Cantons-de-l'Est) to the R-132 east (towards Longueuil).

HIGHWAY 40

From Friday 11 p.m. to Saturday 8 a.m.

From Saturday 11 p.m. to Sunday 9 a.m.

From Sunday 10:30 p.m. to Monday 5 a.m.

• In Sainte-Anne-de-Bellevue , complete closure of the A-40 westbound, between exit 41 (boulevard des Anciens-Combattants, A-20 west) and the following entrance

Detour : service road.

Default closure : the entrance at Chemin des Pins.

VICTORIA BRIDGE

Until Sept. 25:

• Between Montreal (Arr. Le Sud-Ouest) and Saint-Lambert , traffic in one direction, until September 25, according to the following schedule:
• Towards Montreal only, from 5 a.m. to 3 p.m.
• Towards Saint-Lambert only, from 3 p.m. to 5 a.m. the next day.

HIGHWAY 50 (GUY-LAFLEUR) AT MIRABEL

• In Mirabel , complete closure in both directions of the A-50 (Guy-Lafleur), between exit 272 (R-148, route Arthur-Sauvé, Saint-Eustache) eastbound and exit 279 (chemin Saint- Simon, Saint-Colomban) westbound, from Friday 7 p.m. to Saturday 3 p.m.

Detour : via the R-158.

Default closures :

• The entrance to Chemin Saint Simon for the A-50 west.
• The entrance from the R-148 to the A-50 is.

SHERBROOKE STREET WEST IN MONTREAL

• In Montreal (Côte-des-Neiges district, Notre-Dame -de-Grâce), complete closure of Sherbrooke Street West in both directions, between Oxford and Wilson avenues, from Saturday 7 a.m. to Monday 7 a.m.

Detours :

• East direction, via avenue Girouard, rue Saint-Jacques Ouest and boulevard Cavendish
• West direction: via avenue Girouard, avenue de Monkland and boulevard Cavendish 

ROUTE 136 WEST

• In Montreal (Ville-Marie district) , closure of the Sanguinet Street entrance to the R-136 west / Ville-Marie tunnel, Saturday from 7 a.m. to 11 a.m.

DEMONSTRATION AT PARC JEANNE-MANCE

• Demonstration by public sector unions at Parc Jeanne-Mance, at the intersection of Mont-Royal and Avenue du Parc, Saturday, Sept. 23, starting at 1 p.m.

BENEVA MONTREAL MARATHON

• Events related to the Marathon Beneva de Montréal are scheduled for Saturday and Sunday, during the day. Significant delays are expected on the municipal road network, along Saint-Joseph and Saint-Laurent boulevards, and on the highway network, on Highway 40. The public is invited to use public transport.

SERGE-MARCIL BRIDGE/HIGHWAY 30

• Between Les Cèdres and Salaberry-de-Valleyfield , partial closure of the Serge-Marcil bridge eastbound, Saturday and Sunday from 6 a.m. to 8 p.m.