Consulting engineer Philip Louis Pratley was the renowned designer of several long-span bridges. Among the most notable are the Jacques Cartier Bridge, the Île d'Orléans Bridge, the Lions Gate Bridge in Vancouver and the Champlain Bridge, which was completed by his son after Pratley's death.
The history of Dominion Bridge is tied in with the building of the railway across Canada in the latter half of the nineteenth century. At that time, the company was in charge of erecting all of the railway bridges used by the Canadian Pacific Railway line between Montreal and Vancouver. Its steel expertise is evident in a number of imposing structures, some of which have symbolic value today. They include the Québec Bridge and the Jacques Cartier Bridge, the structural work in the Château Frontenac and the Champlain Bridge, and the cross on Mount Royal.