Salini Impregilo and Fincantieri Infrastructure will build the new bridge to a design led by architect Renzo Piano.

The two companies will work together by creating a new company called Pergenova. The aim is to complete the structure in just 12 months from the time when work at the site can begin following the demolition of the old bridge.

The original bridge collapsed in August, killing 43 people.

The bridge over the Polcevera is a key artery that connects the port and the wider coastal area to France. The new structure will have a continuous steel deck 1,100m in length with 20 spans. It will have 19 elliptical piers made of reinforced concrete, most positioned 50m from each other. Two of the piers will be 100m from each other to span over the river and the railway. The design also takes into account the fact that the bridge crosses a densely populated area.

Renzo Piano Building Workshop

(above) image by Renzo Piano Building Workshop

Fincantieri will build the structural steelwork at its Genoa-Sestri Ponente shipyard, as well as at the Valeggio sul Mincio (Verona) facility and, if necessary, at its other yards in Italy.

Structural elements for the deck will be transported to site then assembled and welded at ground level to minimise work at height.

Hoisting will be carried out using strand jacks and the deck will be aligned to the main steel elements, previously placed at the top of the piers using a mobile crane.

An integrated monitoring, control and inspection system for the bridge will be provided.In partnership with Cetena, a company within the Fincantieri Group.

new Polcevera Bridge, design by Renzo Piano Building Workshop

(above) image by Renzo Piano Building Workshop

“Twelve months to help relaunch Genoa,” said Pietro Salini, chief executive of Salini Impregilo. “That is the dream that we are hoping to give the Genoese before Christmas in memory of the victims of this terrible tragedy: to relaunch the city as quickly possible and send a strong message to the entire country. Public works can kickstart the economy and start to create jobs again.”

“Fincantieri offered its assistance from the very first moment, we owed it to Genoa and Liguria,” said Giuseppe Bono, chief executive of Fincantieri.