
BESIX-Donati won the contract for the construction of a new 3.3 km stretch of road, including two tunnels and a viaduct in Ancona, Italy.
The works commissioned by Anas S.p.A improve the accessibility of the international port of Ancona.
BESIX-Donati made the difference by proposing a smarter methodology for the execution of one of the two tunnels.
The project will last 36 months, and the contract value is 108 million euros.
This is the second collaboration in a short time for infrastructure works in Italy for BESIX and Donati.
The works, issued by Anas, the Italian national authority on (motor) roads, are part of a larger plan to connect the Port of Ancona to the SS16. BESIX-Donati is responsible for the Execution Design and Build of the road connection of 3.3 km, including two tunnels with a total length of 1,120 m and a viaduct of 285 m. This contract marks the second major public infrastructure work for BESIX in Italy since 2020.
A key award criterion for the client was that the contractors would propose an optimised design for one of the tunnels, Torrette 1. This is where BESIX-Donati made the difference. Instead of completely excavating this 470 m long tunnel, which would involve moving huge volumes of soil, BESIX and Donati worked out a solution to work partly underground. This smart methodology brings several advantages, more specifically a better score in terms of sustainability, a shorter execution time, a lower price tag, less inconvenience and increased safety during the works.
For example, by working partly underground, the CO2 impact of the works is drastically reduced thanks to a reduction in transport of disposed soil. It also alleviates surface disturbance: the road running over the surface above the tunnel does not have to be interrupted and rerouted, the telecom network is less affected, the site needs less space to store the excavated soil and the expensive and heavy stuts needed to support a construction pit of this size are avoided. Moreover, this solution also reduces noise and dust pollution.
)
Next to this tunnel, BESIX-Donati is also responsible for a 285 m long viaduct with 7 spans, a second bored tunnel of 650 m long with one lane in each direction and new sections of road connecting the works, totalling about 1.9 km. The design phase will start at the beginning of 2024. The final project duration will be 36 months and the contract value is €108 million.
)