Skanska has signed a $500.6m contract with the Norwegian Road Authority to build part of a major subsea road tunnel in Rogaland County.
The 27km Boknafjord twin tunnel will link the Randaberg and Bokn municipalities.
Skanska said Boknafjord will be the world’s longest and deepest subsea road tunnel, reaching a depth of 392m below sea level.
Norway’s Parliament approved it in 2017 and work began in 2018, but rising costs delayed the project.
The project is divided into segments; Skanska will build the E04 Boknafjord tunnel North, comprising 18.5km of road in the tunnel and 2km of road above ground.
Construction is expected to begin in the first quarter 2023 and finish in the third quarter 2029.
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