This will be a part of the main European route E39 highway along the west coast of Norway and it will link the cities of Kristiansand – Stavanger – Haugesund – Bergen.

Construction began in January 2018, with a ceremony for the initial rock blasting for one future entrance to the tunnel.

[9] In October 2020, the Norwegian Public Roads Administration brought its revised plan to the government for consideration.

[12] On December 12, 2022, the first main contract was signed with Skanska for the construction of the northern part of the 26.7-kilometer tunnel, valued at nearly 5 billion NOK.

[13] The second main contract, signed on January 9, 2023, with Implenia Norge, focuses on the southern part of the tunnel, amounting to 4 billion NOK.

[14] The final main contract, signed June 11, 2024, also with Implenia/Stangeland for the middle part of the tunnel is valued at 6.2 billion NOK.