Major roadwork will affect traffic on the Champlain and Nuns’ Island bridges this weekend from Friday 9 p.m. until Monday 5 a.m.

The lanes will be reconfigured on both the Champlain and Nuns’ Island bridges, leaving only one lane open in each direction.

“This second weekend of major work of the 2014 season will allow us to work day and night on various projects,” said a statement issued Friday afternoon from the Jacques Cartier and Champlain Bridges Incorporated.

The bridge corporation says the superbeam will not be removed this weekend — it will be done later this spring.

The 75-tonne superbeam was installed as a measure to strengthen the bridge, after a crack was discovered in a girder last November. The beam was supposed to be removed last weekend, but that work was delayed because of strong winds.

Detours

Although one lane will still be available on the Champlain and Nuns’ Island spans, officials are urging drivers to use alternate routes to travel between Montreal and the South Shore such as the Jacques-Cartier, Victoria, Honoré-Mercier bridges or the Lafontaine tunnel.

Highway 15, which leads to the Champlain Bridge, will remain open all weekend. However, the lane width will be reduced to three metres this weekend. Trucks that require wider lanes will have to find alternate routes.

Here is a detailed list of the closures in the Champlain Corridor (from the The Jacques Cartier and Champlain Bridges Incorporated)

A-15

  • North : Two lanes open
  • South : Two lanes open

Nuns Island Bridge

  • One lane open towards Montreal
  • One lane open toward South Shore

Champlain Bridge

  • One lane open towards Montreal
  • One lane open towards South Shore

Access ramps and exits closed

  • Access ramp to Champlain Bridge coming from Route 132 (East and West): closed
  • Exit 60 of A-15 North to A-Bonaventure and Verdun: closed

Victoria Bridge

  • One lane per direction for the weekend
  • Exception: Sunday, 10 p.m. to midnight, two lanes towards the South Shore

For Nuns’ Island residents

Access to Nuns’ Island coming from:

  • Champlain Bridge / A-15 North (Exit 57): open
  • A-Bonaventure (Exit 5): open
  • A-15 South (Exit 57-N and 57-S): open

From Nuns' Island to:

  • Champlain Bridge / A-15 South: open
  • A-Bonaventure: open
  • A-15 North: closed