Dominion Bridge Company

Between 1979 and 1988, the company's Lachine plant operated under the auspices of a subsidiary called Dominion Bridge-Sulzer Inc., which was co-owned by AMCA International and Sulzer Inc.

After being sold, this property was repurposed to become The Bridge Studios, the site of the largest special effects stage in North America.

With a lowest bid of $6,954,000, the company secured the contract to erect the steel superstructure of the Jacques Cartier Bridge linking Montreal to the South Shore on October 25, 1925.

It had built the original bridge between 1932 and 1934 using steel caissons assembled by Dufresne Engineering from plates manufactured at Dominion's Lachine yards.

The company's Canadian operations experienced a major decline after work was completed on projects for Montreal's Olympic Games in 1976.

Furthermore, the company reduced the scope of its Montreal-area operations between the early 1970s and 1990: the satellite facility in Montreal's Longue-Pointe district was closed, two large shops in Lachine were acquired by Sulzer Inc. after the dissolution of Dominion Bridge-Sulzer Inc., and several buildings on the property of the Lachine plant were mothballed or torn down following the dissolution.

Later in 1998, Groupe ADF Inc, a steel company from Terrebonne, Quebec, purchased the assets of the Lachine plant and restarted operations.

In November 2003, ADF closed the Lachine plant due to declining fortunes in the North American steel industry, which had been losing ground to cheaper Asian competitors for many years.