We Build Québec
From the Samuel de Champlain Bridge to the Place des Montréalaises to Expo 67, Amrize has been building Québec landmarks, destinations, and infrastructure for more than 70 years.
Saint-Constant cement plant modernization
Our Saint-Constant cement plant sits at the heart of Québec’s built environment. Soon, it will play an even greater role.
We’re making the largest investment in the Canadian cement industry in the last decade to transform our Montréal area plant into the most advanced and sustainable in Eastern Canada.
The modernization will expand production capacity to 1.2 million tonnes annually and improve the facility’s carbon footprint by over 40% by 2035.
Once complete, the plant is expected to be the lowest-carbon cement producer in Eastern Canada.
Measures to reduce GHG emissions are supported by the Government of Canada, through the Low-Carbon Economy Fund (LCEF), as well as by the Government of Quebec, under the ÉcoPerformance program and the Support Measure for the Decarbonization of the Industrial Sector (MADI), two initiatives stemming from the 2030 Green Economy Plan and funded by the Quebec Carbon Market.
The Saint-Constant cement plant modernization is Amrize’s largest capital investment in North America in 2026.
The 120-person team at the Saint-Constant plant will grow by 25% as part of the modernization program.
Québec materials for Québec builders
Québec manufacturing stands for quality, expertise, and local jobs. That’s why we plan to offer our “Manufactured in Québec” cement label from Saint-Constant.
This label will assure builders that all aspects of the product are made in Québec—from raw materials and processing to manufacturing—reinforcing Amrize’s commitment to local jobs, local communities, and local manufacturing.
Bridges that connect Québec
From iconic crossings to next-generation infrastructure, Amrize helps build the connections that keep Québec moving.
Cement produced at our Saint-Constant plant supplies the concrete and cementitious materials that support landmark projects, including the Samuel De Champlain Bridge—Canada’s second-busiest bridge by traffic volume.
Today, we continue to power the construction of the new Île-aux-Tourtes Bridge, strengthening a vital transportation corridor between Vaudreuil-Dorion and Montréal, and the future Île d’Orléans Bridge, where we are delivering tonnes of cementitious materials designed to meet both structural performance and architectural requirements.
Amrize provided cement for the 250,000 m³ of concrete and 90,000 tons of cementitious materials required for the Samuel De Champlain Bridge—a twin cable-stayed bridge built to replace the original crossing.
The Montréal–Trudeau International Airport rehabilitation project involved 30,000 m³ of concrete across two projects, produced using our newly installed portable batching plant.
Moving Québec forward
For decades, Amrize has helped build and modernize the transportation networks that connect Québec’s communities and drive economic growth.
From supplying Montréal’s metro system during its earliest construction and expansion phases to the latest Blue Line extension—one of Québec’s largest transit projects—our materials continue to shape how people move across the province.
Saint-Constant solutions also contributed to the award-winning Vendôme intermodal hub, delivering accessibility and architectural performance through IMAGItect concrete. While at Montréal–Trudeau International Airport, we supported a major taxiway rehabilitation through integrated cement, aggregates, and ready-mix capabilities.
Across Québec’s highway network—including Autoroutes 40, 13, 15, 20, 30, and 10—our specialized cement has helped improve durability, reduce maintenance needs, and strengthen long-term infrastructure performance.
Hydroelectric development in Québec
The Saint-Constant plant supplied cement for some of the province’s most significant hydroelectric energy infrastructure projects of the 1970s, ’80s, and ’90s, such as the James Bay Project, the Brisay Generating Station, and the Robert-Bourassa Generating Station.
To support these massive concrete structures, the plant developed specialized low-heat hydration cement formulations, helping improve durability and structural stability in large-scale concrete pours.
These projects became symbols of Québec’s economic growth, technological leadership, and renewable energy expertise while supporting regional development and job creation across the province. It’s a legacy we continue to build on today.
Completed in 1979, the Robert-Bourassa Generating Station became one of the largest underground hydroelectric power stations in the world.
Shaping places where Québec lives, gathers, and celebrates
Maestria Towers
From skyline-defining residential towers to iconic public destinations and cultural landmarks, Amrize has contributed to projects that shape everyday life across Québec.
In Montréal’s Quartier des spectacles, our specialty cement solutions supported Maestria’s landmark twin towers and signature suspended skybridge.
Place des Montréalaises
We also helped deliver award-winning public spaces such as Place des Montréalaises, reconnecting Old Montréal with downtown through innovative architectural concrete.
Across the province, Saint-Constant contributed to the construction of major destinations, including Centre Vidéotron in Québec City and the Casino du Lac-Leamy expansion in Gatineau.
Expo 67
Our legacy in Québec also includes Expo 67—one of the defining moments in the province’s cultural and economic history—where Saint-Constant cement helped build the pavilions, roads, and public infrastructure that introduced Montréal to the world.
Our partners
Government of Canada Low Carbon Economy Fund (LCEF)
