New Bridge for the St. Lawrence - Presentation: Information session on Hydro-Québec tower relocation

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  • On October 5, 2011, the Government of Canada announced that the Champlain Bridge would be replaced by a new bridge, and that the new bridge would be built as a public-private partnership (PPP)
  • The Government of Canada has adopted a collaborative approach with key project stakeholders, including the City of Brossard

Project background

Project Timelines

Timeline showing key milestones for the New Bridge for the St. Lawrence Corridor Project

Read a text description of the project timeline

Project Objectives

  • Ensure Continued Safety and Service
    • Maintain safety of the corridor prior, during and after construction
  • Promote Economic Growth
    • Strengthen the economy through job creation and the improvement of the local, regional and national gross domestic product
  • Provide Value for Money for Canadians
    • Obtain and maintain high quality infrastructure at the lowest life cycle cost possible
  • Foster Sustainable Development and Urban Integration
    • Promote sustainable transportation by building a dedicated public transit corridor and providing for a safe and accessible multi-use path for pedestrians and cyclists

Project Scope

NBSL – Preferred configuration

  • The preferred configuration consists of:
    • Box girder for the approach spans, cable supported over the St. Lawrence Seaway
    • Three decks: two decks with three lanes each for cars and trucks; middle deck for transit (able to accommodate buses or a light rail system)
    • Multi-use path next to one of the car decks
      • The Project's technical specifications include a connection from the multipurpose path on the new bridge to the bicycle path that runs alongside the St. Lawrence
      • INFC and Brossard are discussing the possibility of a second connection to the multipurpose path on the new bridge

Procurement Process

  • Three consortiums have been qualified following the Request for Qualifications (RFQ)
    • Signature on the St. Lawrence Group
    • Saint-Laurent Alliance (SLA)
    • St. Lawrence New Bridge Partnership
  • The Request for Proposals (RFP) for the project was launched on July 18, 2014 (highlighted in red)
    • Submission deadline – Technical proposals: February 2015 (highlighted in red)
    • Submission deadline – Financial proposals: April 2015 (highlighted in red)
    • Announcement of the selection of preferred consortium: End of April 2015 (highlighted in red)
  • An Early Works Agreement will allow for work to begin as of May 2015

Other important elements

Public Transit

  • The Government of Canada will provide the right-of-way for public transit within the corridor project
    • Quebec will manage the public transit system
  • The Quebec government has requested a hybrid public transit corridor
    • The corridor reserved for public transit will be designed to accommodate buses and a light rail transit (LRT) system
    • During the construction of a future LRT, buses will be able to circulate on the shoulders of the vehicle decks

Architectural Quality

  • The firm Dissing + Weitling, in conjunction with the Montreal-based company Provencher Roy + Associés, received the mandate to develop a preliminary design for the bridge
  • The results of the work on architectural quality were presented in June 2014
View of bridge from across the water
View of bridge with pedestrians, cyclists and cars
View of looking out towards river from under the bridge with people

The City of Brossard's Involvement

  • Brossard is involved in various phases of the project and its needs have been incorporated into the technical requirements
    • Management of environmental impacts, particularly on residents' quality of life
      • Construction of noise abatement walls before construction starts
      • Air quality monitoring
      • Discussions with the community and close monitoring while the project is being carried out
    • Connecting the project to municipal infrastructure
      • Connecting the new bridge's multipurpose path to Brossard's network of bicycle paths
    • Protection of municipal infrastructure
      • Close coordination with the City of Brossard when the work could have an impact on city infrastructure

Mitigation measures

  • All the necessary measures will be taken to protect citizens, including implementation of appropriate mitigation measures


  • In areas where it is feasible, permanent noise barriers will be built before work gets under way
  • If possible, the noisiest activities (concrete crushing, heavy truck traffic areas, etc.) will not be located near noise-sensitive areas
  • Work that is especially noisy will be carried out during the day to avoid disturbing residents living next to the construction site

Air Quality

  • While the work is under way, streets in urban areas used by vehicles and machinery will be cleaned daily to prevent accumulation of loose material and other debris
  • Dust-generating activities will be located so as to minimize the impact on the public

Traffic Management

  • INFC and the private partner will work in co-operation with Mobility Montreal (which includes the City of Brossard) to develop a traffic management plan to optimize traffic flow on the roads adjacent to the project
  • The public will be proactively advised of work and diversion measures. Alternative routes will be proposed when obstructions are anticipated

For more information on the project, consult the section of Infrastructure Canada's website dedicated to the new bridge for the St. Lawrence.

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