Jacques Cartier and Champlain Bridges Incorporated (JCCBI), Quebec, announced the timetable for the deconstruction of the original Champlain Bridge in Montreal on Oct. 13. JCCBI also announced the methods that demolition contractor Nouvel Horizon Saint-Laurent G.P. (NHSL) will use on the job.
NHSL will deconstruct the bridge using three different methods. The deconstruction of the shoreline sections will be carried out from jetties set up along the Saint Lawrence River using excavators and cranes.
Work from the river, which will be required for over 65 percent of the project, will be done with a system of platforms attached to high-capacity lifting towers installed on a catamaran barge. Scheduled to take place from 2021 to 2023, this work will be performed in a controlled environment away from residences, respecting the river environment and the local community, the company says.
Work on the steel structure will begin in the fall and winter of 2021-22. First, the 2,200-ton suspended span will be removed and lowered onto a barge using strand jacks. This will be followed by the dismantling of the cantilever sections and anchor spans using a crane setup on the jetties and the seaway dike. The last phase will include the deconstruction of the bridge piers using high-capacity excavators in 2023, and the demobilization of the jetties by the end of January 2024.
“The Champlain Bridge deconstruction project will create jobs, allow for more access to the shoreline and maximize the reuse of materials from a bridge that was an iconic part of the Montreal landscape for almost 60 years,ʺ Minister of Infrastructure and Communities Catherine McKenna says. “I'm happy that The Jacques Cartier and Champlain Bridges Incorporated and Nouvel Horizon Saint-Laurent are working together to ensure this project is carried out in a sustainable way that minimizes the impact on local communities and protects the environment for everyone’s benefit.”
“This ambitious deconstruction project poses enormous technical and environmental challenges. … The methods chosen for work on the river are innovative and will minimize the impact on local residents,” Sandra Martel, CEO of JCCBI, says. “We ensure constant follow-up with NHSL to make sure that exemplary [Canadian Centre for Occupational Health and Safety] measures are in place at the work site.”