Vienna Subway Expansion Produces 2.8 Million Sustainable Bricks from Excavation Material

The Vienna subway expansion project U2xU5 incorporates sustainability by using excavation material to produce 2.8 million bricks. Wiener Linien and Wienerberger are collaborating to utilize high-quality Viennese clay from the U2 extension, marking a significant step in urban circular economy practices. The bricks, set to be available in May, are suitable for various construction projects and aim to contribute to climate-friendly mobility and sustainable construction in Vienna.

Published Mar 21, 2026

The U2xU5 subway expansion in Vienna will produce 2.8 million bricks from excavation materials, promoting sustainability. Wiener Linien and Wienerberger are collaborating to utilize high-quality Viennese clay excavated from the construction site.

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The project aims to reduce landfill waste and support a circular economy by turning excavation materials into valuable raw materials. The bricks will be available in May for construction projects, with enough supply for approximately 1,000 single-family homes. The initiative is part of Vienna's broader climate goals, aiming for climate neutrality by 2040, and it sets a precedent for environmentally friendly construction practices in the region.