Underwater Road Tunnel Salamina island - Perama

The Underwater Road Tunnel Salamina island - Perama is a planned sub-sea road tunnel in the Attica region of Greece, which will provide a direct road link between the island of Salamis of Islands Regional unit in the Saronic Gulf and the port city of Perama in Piraeus Regional Unit, on the east coast of the Saronic Gulf. In whole, the project includes the construction of an underwater road tunnel about 1 km long, the construction of a new road section from Schistos Avenue to the tunnel's entrance in Perama, as well as two new interchanges connecting the adjacent road network in Salamis and Perama. The project has been tendered through the procedure of Competitive Dialogue and is currently at the second stage (stage B) of the tender from which the contractor (concessionaire) will be selected. Three contenders currently participate in the tender: Metka, Terna and a consortium between Vinci Concessions – Vinci Highways – Aktor Concessions. Its cost is estimated at €450 million and its construction period at around four years. When completed, the total length of the new road axis will be about 17 km and the undersea link will significantly reduce the travel time between Salamis and the mainland from about 40 minutes to just 4 minutes.

Tunnel data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).