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Geotechnical challenges associated with the design and construction of the new Champlain Bridge in Montreal

Riad Diab, Taravat Kashi Ghandi, Louis D'Amours, Jean Tardif

In the proceedings of: GeoVirtual 2020: 73rd Canadian Geotechnical Conference

ABSTRACT: In 2015, the Canadian government awarded a $4.3 Billion Design-Build contract to the Joint Venture (JV) team Signature on the Saint Lawrence (led by SNC-Lavalin) for the design and construction of one of the largest infrastructure projects in North America, the new Champlain Bridge in Montreal. The complexity of the project posed unique geotechnical challenges on many levels. Some of the challenges are discussed in this paper. The overall project involved the construction of many smaller bridges, retaining walls, construction of roadway embankment over an old landfill, widening of existing highways over an old 11x5 m collector with unknown structural conditions, and designing foundations in potentially liquefiable soils. This paper addresses the issues encountered and concerns raised during the geotechnical design and how these were addressed and resolved. Design and construction procedures, challenges and solutions are discussed in detail.


RÉSUMÉ: En 2015, le gouvernement canadien a attribué un contrat de conception-construction de 4,3 milliards de dollars au consortium Groupe Signature sur le Saint-Laurent (dirigée par SNC-Lavalin) pour la conception et la construction de l'un des plus grands projets d'infrastructure en Amérique du Nord, le nouveau pont Champlain à Montréal. La complexité du projet a posé des défis géotechniques uniques à plusieurs niveaux qui sont discutés dans cet article. Le projet global comprend la construction de nombreux petits ponts, des murs de soutènement, la construction d'un remblai routier sur un ancien site d'enfouissement, l'élargissement des autoroutes existantes sur un ancien collecteur de 11 x 5 m avec des conditions structurelles inconnues et la conception de fondations dans des sols potentiellement liquéfiables.


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Cite this article:
Diab, Riad, Ghandi, Taravat Kashi, D'Amours, Louis, Tardif, Jean (2020) Geotechnical challenges associated with the design and construction of the new Champlain Bridge in Montreal in GEO2020. Ottawa, Ontario: Canadian Geotechnical Society.

@article{Diab_GEO2020_214, author = {Diab, Riad}, {Ghandi, Taravat Kashi}, {D'Amours, Louis}, {Tardif, Jean},
title = Geotechnical challenges associated with the design and construction of the new Champlain Bridge in Montreal ,
year = 2020
}