Gavio Group

The Gavio Group is an industrial group rooted in Tortona, active in the motorway infrastructure sector. It controls Astm, a company based in Turin that operates about 6,200 kilometres of motorways worldwide ^[1].

International activities

Astm has taken part in infrastructure projects in Sweden, Denmark and Botswana. The group also operates in the United States through its American subsidiary Halmar International ^[1].

The Golden Gate Bridge contract

In November 2026 the Gavio Group, through Astm and Halmar International, was awarded a contract worth 863.9 million dollars, about 770 million euros, for the seismic retrofit of the Golden Gate Bridge in San Francisco ^[1]. The work covers the bridge's two towers and side spans — the bridge was opened in 1937 — and includes reinforcing the load-bearing structures, replacing the roadway's isolation joints and installing 28 devices designed to dissipate seismic energy. Repainting the top of the south tower is also planned ^[1].

The contract was approved by the Californian authorities in October 2025 and signed the following December. The works entered their operational phase at the start of January 2026, while the first overnight lane closures began on 5 October of that year. The site must proceed without interrupting the crossing, used every day by about 95,000 vehicles as well as pedestrians and cyclists: restrictions are planned mainly during night hours, between 8 pm and 5 am, keeping at least one lane open in each direction. Completion of the works is set for September 2031 ^[1].

Astm's chief executive, Umberto Tosoni, commented on the operation, stressing the sense of responsibility tied to work on a structure of international importance ^[1].

Chronology

• 2 November 2026 — The Gavio Group, through its subsidiary Astm and the American company Halmar International, is awarded a contract worth 863.9 million dollars (about 770 million euros) for the seismic retrofit of the Golden Gate Bridge in San Francisco. → Quotidiano Piemontese

Sources

1. Il Golden Gate Bridge si affida al gruppo Gavio: commessa da 770 milioni per proteggerlo dai terremoti — Quotidiano Piemontese, 2 November 2026