New Bridge for the St. Lawrence

The Minister of the Environment has designated this project and the environmental assessment will continue under the former Canadian Environmental Assessment Act.

The Government of Canada is proposing to build a New Bridge to replace the existing Champlain Bridge in Montreal. It will span the St. Lawrence River to connect the Island of Montreal to the South Shore. This is the busiest crossing in Canada for cars, trucks and buses and is vital to the regional and national economies.

The project has six parts:

  • New Bridge for the St. Lawrence;
  • Alignment with Autoroute 10;
  • Work on Nuns' Island;
  • New Nuns' Island Bridge;
  • Reconstruction and Widening of a Section of Autoroute 15; and
  • Demolition of the Existing Champlain Bridge.;


Latest update

October 02, 2013 - The assessment decision has been taken.


External links

Please note that access to external websites is provided solely as a courtesy. Users should be aware that the information offered by non‑Government of Canada websites that are not subject to the Official Languages Act might be available in only one language.


Transport Canada (New Bridge for Saint-Lawrence)
112 Kent Street
Place de Ville, Tower B, 20th floor (AHPB)
Ottawa, Ontario K1A 0W8

  • Location

    • Montreal (Quebec)
  • Nature of Activity

    • Bridges
  • Assessment Status

  • Start Date

  • Proponent

    Government of Canada
  • Authorities

    • Environment Canada
    • Fisheries and Oceans Canada
    • Transport Canada
  • Assessment Type

    Screening-type assessment under CEAA 1992
  • Reference Number


This map is for illustrative purposes. The markers represent the approximate locations based on available data. More than one marker may be identified for a given assessment.


Nearby assessments

...within 200 kilometres
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