History | PJCCI


The Champlain Bridge deconstruction is the largest project in JCCBI’s history and is a unique project for Quebec. Its overall $400M envelope includes:

  • Deconstruction work at a cost of $225.7M
  • Environmental protection measures
  • Material reuse and Research & Development programs
  • Redevelopment of the shoreline at the end of the project

The deconstruction work is being carried out by the Nouvel Horizon Saint-Laurent (NHSL) consortium formed by Pomerleau Inc. and Delsan A.I.M Environmental Services Inc.  

Main project stages

From November 4 to 7
May 13

Removal of the 30th marine span between Île des Soeurs and the St. Lawrence Seaway dike.

End of the use of the catamaran barge,also called the “River Giant,” which helped our crews lift and deconstruct the spans in the marine sector while protecting the St. Lawrence River.  

January 8

Transport of the span to the dismantling site in Brossard

January 7

Lowering of the suspended span over the St. Lawrence Seaway

January 6

Separation of the suspended span over the St. Lawrence Seaway


End of dismantling of the main span at Léon-Gravel Park in Brossard.

Preparatory work prior to the deconstruction of the cantilever of the east span (on the Brossard side).

  • Installing two temporary tower systems supported on the jetty in the Lower La Prairie Basin in Brossard
  • Installing steel reinforcements on the existing structure
December 31

Deadline for submitting projects for the Material Reuse Competition

December 6

Third virtual meeting with the residents of Île des Soeurs and Brossard

June 2

Second virtual meeting with the residents of Île des Soeurs and Brossard

June 1

Work on Île des Sœurs and the jetty: complete deconstruction of piers, spans and abutment  

Marine work: 

Preparatory work to take down suspended span over the seaway 

Construction of temporary jetty built along the seaway dike  

Construction of the temporary jetty in Brossard (phase 2) 

October 29

First virtual meeting with the residents of Brossard

October 20

First virtual meeting with the residents of Île des Soeurs

October 13
June 26

Design-build contract awarded to NHSL for the deconstruction work

March 5

NHSL chosen as the successful tenderer for the deconstruction work


Start of work on Île des Sœurs:

Construction of temporary jetties on Île des Soeurs and in Brossard (phase 1) 

Start of the fish habitat compensation project in Saint-Ignace-de-Loyola in partnership with the Nature Conservancy of Canada (NCC)


Guided tours of the Champlain Bridge in partnership with Héritage Montréal

Publication of the Targeted Environmental Analysis (TEA)


Commissioning of the new Samuel De Champlain Bridge, which opened partially toward Montreal on June 24, 2019 and then in both directions on July 1, 2019.

Decommissioning of the original Champlain Bridge


Start of public meetings

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