New Genoa Breakwater: 20th caisson installed. Project reaches 900 metres in length

PRESS NOTE

• More than 500 days of deep underwater work for the maritime project led by Webuild

• A fleet of 60 ships for the technological challenge in the Mediterranean

GENOA, April 28, 2026 - Construction of the New Genoa Breakwater continues with the installation of the 20th caisson. The placement is part of the work carried out by the PerGenova Breakwater Consortium, led by Webuild, on behalf of the Western Ligurian Sea Port Authority.

The project is advancing according to the highest safety standards and rigorous protocols to safeguard the marine ecosystem, combining engineering complexity with protection of the surrounding area.

With the installation of the latest caisson, the breakwater exceeds 880 metres in total length. It includes 20 caissons, comprising three large units (67 metres long and 34 metres high) and 17 standard modules, which together form the main body of the barrier.

Technical efforts are focused on underwater operations, which have exceeded 500 days of continuous activity, ranging from unexploded ordnance clearance to structural monitoring. In open sea, a fleet of more than 60 vessels is operating, engaged in logistical coordination that monitors weather and sea conditions to ensure personnel safety.

On the sustainability front, the protection of marine wildlife remains an operational priority. During approximately 60 transport voyages for the caissons, 43 sightings of cetaceans and local marine fauna were recorded data that confirm the effectiveness of the acoustic and visual mitigation protocols adopted along routes.

Alongside the external barrier, construction of the superstructure is also progressing, with the first two segments of the deck slab of caisson C35 already cast. Additional works are progressing, including the construction of a water pipeline serving the Genoa Aquarium. Together with the Terzo Valico dei Giovi railway project, the breakwater is shaping up as a strategic asset for improving the logistics efficiency of the Genoa port system in the Mediterranean.

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Webuild is a global leader in the construction of large, complex infrastructure, with a focus on sustainable mobility, hydropower, water treatment and supply, and green buildings. It has long been recognised as the world's top contractor in the water infrastructure sector. Active in approximately 50 countries, the Group employs some 95,000 people directly and indirectly of over 125 nationalities. With 120 years of history and over 3,700 completed projects, Webuild boasts a track record that includes 13,686 kilometres of railways, 895 kilometres of metros, 82,708 kilometres of roads and highways, 1,023 kilometres of bridges and viaducts, 3,466 kilometres of tunnels, and 320 dams and hydropower plants. Among its most iconic delivered projects are the Grand Ethiopian Renaissance Dam, the expansion of the Panama Canal, the Long Beach International Gateway in the United States, the Second Bosphorus Bridge in Turkey, the Riachuelo environmental restoration system in Argentina, and new metro lines in cities such as Copenhagen, Paris, Rome, Milan, Naples, Doha, Thessaloniki, and Riyadh. Among those under construction are strategic public works in Italy, such as the New Genoa Breakwater, the Brenner Base Tunnel, the Pedemontana Lombarda Highway, Rome Metro's Line C, sections of high-speed and/or high-capacity railways between Genoa and Milan, Verona and Padua, Naples and Bari, and Palermo, Catania and Messina. Abroad, there is the Snowy 2.0 hydropower scheme in Australia and key sections of the Grand Paris Express in France. As of December 31, 2025, the Group reported total revenues of €13.6 billion and a total order backlog of €58.4 billion, with over 95% of the construction backlog aligned with the United Nations Sustainable Development Goals. Webuild is headquartered in Italy and subject to the direction and coordination of Salini Costruttori S.p.A. Listed on the Milan Stock Exchange (WBD; WBD.MI; WBD:IM), its stock is included in the MIB ESG index of Italy's leading blue-chip companies for ESG practices.

More information at https://www.webuildgroup.com