Construction of SEK 5.2-Billion Subsea Tunnel in Norway Begins

Boknafjord ferry, Norway (Photo: AdobeStock)

Skanska has signed a contract with the Norwegian Road Authority to build a subsea tunnel in Rogaland County, Norway. The contract is worth approximately NOK 5 billion, about SEK 5.2 billion, which will be included in the Nordic order bookings for the fourth quarter 2022.

The E39 Rogfast project is a 26.7-kilometer-long subsea road tunnel – the Boknafjord tunnel – between the municipalities Randaberg and Bokn in Rogaland County, Norway. The project is divided into segments, and the contract Skanska has signed is called E04 Boknafjord tunnel North.

The 10.5-meter-diameter tunnel will become the world’s longest and deepest subsea road tunnel, with a maximum depth of 392 meters below sea level. The general contractor will build the northern part of the Boknafjord tunnel. It is a twin tunnel, with Skanska building 18.5 kilometers of road in-tunnel and 2 kilometers of road above-ground.

Construction is expected to begin in first quarter 2023 and will be completed in third quarter 2029.

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