Salini Impregilo and Fincantieri Infrastructure, a subsidiary of Fincantieri, have secured a contract to rebuild the collapsed Genoa bridge across the Polcevera River in Italy.
The contract has been awarded by Genoa Mayor Marco Bucci, who is also commissioner of the reconstruction effort.
The new bridge has been designed by architect Renzo Piano.
Both companies will work through a new company, Pergenova, to complete the bridge within 12 months from the date of commencement of work following the demolition of the old bridge.
The bridge is a key artery that connects the port and the wider coastal area to France and the new structure is expected to play a key role in helping Genoa return to being an important shipping and commercial hub.
The bridge will have a continuous steel deck 1,100 metres long in length with 20 spans, with 19 elliptical piers made of reinforced concrete, most of which will be positioned 50 metres from each other.
Two of the piers will be 100 metres from each other because of their location on the river and the railway.
The design also takes into account the fact that the bridge passes through a densely populated area.
Fincantieri will build the steel structures at its Genoa-Sestri Ponente shipyard, as well as at the Valeggio sul Mincio (Verona) facility, and at the other yards of the group in Italy, if necessary.
The metallic deck will be produced in macro structural elements, which will be transported to the site, assembled and welded, completing the working of each span on the ground, reducing operations to a minimum.
Special equipment, called strand jacks, will be used for the hoisting, which will enable the aligning of the deck to the main element in steel previously placed at the top of the pile using a mobile crane.
An integrated monitoring, control and inspection system of the bridge will also be provided in partnership with Cetena, a company belonging to the Fincantieri Group, dedicated to research and based in Genoa.
Image: Rendering of the new bridge across the Polcevera River in Genoa, Italy. Photo: Courtesy of Salini Impregilo.