The Rogfast Tunnel in Norway is poised to become an extraordinary engineering marvel. It is not only planned to be the world’s deepest undersea tunnel, reaching a depth of 400m below the surface, but it will also hold the title of the longest, spanning an impressive 27km (approximately 17 miles).
A significant advancement has recently surfaced in the ambitious project to ensure its successful completion. Construction work on the tunnel, connecting Randaberg and Bokn villages, commenced in January 2018 but faced a halt in the following year due to escalating costs. However, with revised plans in place, construction resumed in 2021, and a notable breakthrough has now been confirmed, providing a substantial boost to the project.
This tunnel is a part of a larger initiative to upgrade the E39 road, a coastal route linking Trondheim and Kristiansand in Norway. Currently, traveling between these points takes 21 hours and involves multiple ferry crossings. The ultimate objective is to replace all seven ferry routes with tunnels and bridges, reducing the travel time to 11 hours. Authorities aim to finalize the entire project by 2050.
Introducing this initial tunnel will trim 40 minutes off the journey between Stavanger and Bergen while enhancing transportation reliability. The Nordic Investment Bank (NIB) recently approved a NOK 4 billion loan to support the project, with Norwegian toll operator Ferde AS playing a role as an intermediary.
Carlos Rodriguez, a senior bank official at NIB, emphasized the importance of reliable infrastructure for regional progress and efficient transport connections. The overall anticipated cost of the project is around NOK 25 billion, with an estimated daily traffic volume of 4,000 vehicles.
The Rogfast Tunnel, also known as the Boknafjord Tunnel, will include a double roundabout deep beneath the sea, linking to the island of Kvitsøy. Travelers will descend deeper underground than the height of the Empire State Building.
Skanska, the construction giant overseeing the northern segment of the tunnel, has highlighted the challenges of drilling at such depths below the ocean. Project manager Anne Brit Moen emphasized the focus on ensuring safe and efficient working conditions during the construction process to enhance connectivity along the Norwegian west coast.
Norwegian Public Roads Administration project manager Oddvar Kaarmo mentioned the need for efficient project delivery post the drilling phase, emphasizing the importance of logistics in the project’s success.
To alleviate potential monotony and tunnel anxiety, an art installation will be installed inside the tunnel, aiming to reduce accidents and enhance the overall experience for travelers.