Crown Corporation, which is responsible for the management, maintenance, and monitoring of the bridge—decided to construct a replacement bridge just downstream from the original construction. The new bridge opened on the 1st of July 2019 and the old one closed to traffic after only 57 years in service. JCCBI contracted “Nouvel Horizon Saint-Laurent (NHSL)”—which is a joint venture that includes Delsan-A.I.M. Environmental Services Inc. (DelsanA.I.M.)—to undertake the planning, engineering, and deconstruction of the original Champlain Bridge. The overall project started in July 2020 and is scheduled to be completed over a 3-year period by December 2023. “The scope is to deconstruct the entire bridge from abutment to abutment, but with some specific parts and pieces to be conserved for historical reasons and also for R&D in collaboration with University Engineering department studying structural behavior and deterioration over time,” says Hebert. DEMOLITION PROCESS “Many processes were used to demolish the bridge, mainly because of the different conditions found in the structure’s 3.4 km length,” says Hebert. “All work performed in the approach, over land or temporary jetties, was performed using more traditional means and methods, with excavators, specials demolition attachment and cranes.” 11
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