On September 17, 2018 the contract for the construction of the Świnoujście tunnel was signed in the presence of Polish Prime Minister Mateusz Morawiecki. The project will be implemented by a consortium consisting of Porr, Gülermak and Energopol-Szczecin. The contract value is around EUR 150 m and the project is expected to take 48 months to complete. The total length of the project is approximately 3.2 km. This includes a 1.44 km TBM-excavation in the slurry shield procedure. The breakout diameter of the tunnel will be 13.5 m. A two-way roadway will be constructed with traffic lanes with a width of 3.5 m and evacuation niches will be built using ground freezing. The project will be implemented as a Design & Build contract.
The Polish city of Świnoujście extends over the eastern part of the island of Uznam as well as over the islands of Wolin and Karsibór. Uznam and Wolin are separated by the Świna river, an arm of the Baltic Sea. Traffic between the islands is currently carried out via ferry connections across the Świna. Due to the high capacity utilisation of the ferry crossings, waiting times during the holiday season can be up to several hours. Fluctuating weather conditions make ferry operations even more difficult. Once the tunnel is completed in autumn 2022 it will provide a direct connection between Uznam and the Polish mainland. In addition, the journey time will be reduced to just a few minutes as well as significantly improving the connection to Polish holiday areas in West Pomerania.