10 JAN 2026 | BUSINESS ELITE CANADA MATERIALS, STRUCTURE, AND LONG-TERM VIABILITY Sustainability and longevity are central to the project’s technical approach. The new structure will consist of two parallel and independent decks separated by approximately five metres, a configuration that facilitates inspections and future maintenance. Steel beams topped with reinforced concrete slabs will create a redundant structural system familiar to the Ministry, which oversees more than 10,000 bridge structures across the province. “The type of structural system used for the existing bridge is no longer part of the Ministry’s practices, particularly given the challenges related to repair and maintenance,” Grondin explains. Durable materials have been prioritized throughout the design. “As part of its project, the Ministry prioritizes the use of sustainable materials, including high-performance concrete, galvanized steel reinforcement, and a waterproofing membrane for the deck,” she adds. Although the Ministry initially required a minimum lifespan of 75 years, the final design significantly exceeded expectations. “The contractor was able to enhance the structural elements to the Ministry’s satisfaction, resulting in a structure with a lifespan of 100 years,” Grondin says. (Photo Credit : Ministère des Transports et de la Mobilité durable et Mobilité Montréal) Transport of the beams that were installed above the water on the east side of the bridge near Girwood Island in Senneville.
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