Those planning trips via car on the weekend should note that several major closures will result in long lines of brake light-illuminated vehicles staring in vain as traffic creeps along.

Best to avoid taking the Louis-Hippolyte-La Fontaine Tunnel from the North shore, or the Turcot or Saint-Pierre interchanges, as well as the other routes below that will feature closures due to construction.

HIGHWAY 25 / LOUIS-H.-LA FONTAINE TUNNEL

From Saturday at 12:30 a.m. to Monday at 5 a.m., the following closure will be in effect:

  • Between Longueuil and Montreal, Highway 25 north between exit 90 (R-132, La Prairie, Varennes) on Highway 20 West and the Souligny Ave. entrance, including the Louis-Hippolyte-La Fontaine tunnel.

As a result, the following are default closures as of Friday at midnight:

  • The Route-132 east and west (Exits 89-N) ramps to Highway 25 North.
  • The Île-Charron St. entrance.
  • The Sherbrooke Street entrance.

La Fontaine Tunnel closures from Sept. 9-12

VILLE-MARIE EXPRESSWAY (R-136)

From Friday at midnight to Monday at 5 a.m., the following closure will be in effect:

  • The Ville-Marie Expressway (R-136) eastbound between the Turcot Interchange and the Notre-Dame and de la Cathédrale entrances, in the Ville-Marie tunnel.

Vill-Marie Expressway East

As a result, the following are default closures:

  • In the Turcot interchange, the three ramps leading from Highway 15 North, Highway 20 East and the Decarie Expressway (A-15) south towards the tunnel.
  • The Pullman Blvd. entrance.
  • The Highway 20 / R-136 East reserved lane between Turcot Interchange and Exit 2 (Atwater Avenue).

NOTE: On the Ville-Marie (R-136) West, in the Ville-Marie Tunnel between Exit 5 (A-10) and the Lucien-L'Allier entrance, one of three lanes will be closed.

Turcot Interchange

SAINT-PIERRE INTERCHANGE

From Friday at midnight to Monday at 5 a.m., the following closure will be in effect:

  • In the interchange, the ramp leading from Route-138 East (from Honoré-Mercier Bridge) to Highway 20 East / Downtown.

St. Pierre Interchange closuresHIGHWAY 13

From Friday at 11 p.m. to Monday at 5 a.m., the following route alteration will be in effect:

  • Between Highway 520 and the Liesse Tunnel, one lane will be open in each direction on the southbound lane.

HIGHWAY 40

From Friday at midnight to Monday at 5 a.m., the following closure will be in effect:

  • Highway 40 East between Exit 41 (Boulevard des Anciens-Combattants) and the next entrance.

Highway 40 closureSAMUEL-DE CHAMPLAIN BRIDGE

  • On Saturday, from 5 a.m. to noon at the end of the bridge towards the South Shore, two of three lanes (left and center) will be closed.

HIGHWAY 10/30 INTERCHANGE

From Friday at 9 p.m. to Monday at 5 a.m., the following closures will be in effect:

  • In Brossard, the Highway 10 East service road at the Highway 30 exit.
  • One of two lanes on the Highway 10 service road.
  • The Highway 30 East service road between the Highway 10 exit and entrance.

As a result, the following are default closures:

  • The Highway 10 East ramp to Highway 30 East.
  • The Highway 30 East ramp to Highway 10 West (towards Montreal).

HIGHWAY 15

From Saturday at 6 a.m. to Monday at 5 a.m., the following route alteration will be in effect:

  • In La Prairie, two of three lanes on Highway 15 North will be closed, between Salaberry St. and Matte Blvd.

As a result, the following are default closures:

  • Exit 47 (Saint-Henri Street).
  • As of 5:30 a.m., the entrances to Salaberry and Saint-Henri streets.

TO BE EXPECTED

Grand Prix map

All closures may be cancelled due to weather or other operational constraints. For all closures in and around Montreal, visit Quebec511.info.