The Rogfast Tunnel in Norway is gearing up to become a remarkable engineering marvel. It is not only going to be the world’s deepest undersea tunnel, diving 400m below the surface, but it will also hold the title for the longest, spanning an impressive 27km (around 17 miles).
A significant development has surfaced in the ambitious project to ensure its continued progress.
The project, initially launched in January 2018 to connect Randaberg and Bokn, faced a setback in the following year due to escalating costs. However, construction recommenced in 2021 with revised plans, and a notable advancement has now been confirmed to propel the project forward.
This exceptional tunnel is a part of a broader transformation of the E39 road, a coastal route linking Trondheim and Kristiansand. Currently, traversing between these locations demands a lengthy 21-hour journey involving multiple ferry crossings.
The ultimate objective is to replace all seven ferry routes with tunnels and bridges, reducing the travel time from 21 hours to 11 hours. The authorities aim to finalize the entire project by 2050.
The first tunnel will trim 40 minutes off the Stavanger to Bergen route while enhancing transportation reliability.
Recently, the Nordic Investment Bank (NIB) sanctioned a NOK 4 billion loan (approximately £307 million) to support the initiative, with Norwegian toll operator Ferde AS acting as an intermediary, according to reports from the Express.
“Reliable infrastructure is crucial for regional progress and efficient transport networks. Rogfast will enhance connectivity in western Norway and bolster the long-term fusion of labor and transport markets,” stated Carlos Rodriguez, a senior NIB official.
The total cost is estimated to reach NOK 25 billion (around £1.8 billion), with an anticipated traffic flow of about 4,000 vehicles daily.
The Rogfast Tunnel, also known as the Boknafjord Tunnel, will even incorporate a double roundabout deep beneath the sea, connecting to the island of Kvitsøy – providing travelers with a descent deeper underground than the height of the Empire State Building.
Skanska, the construction giant overseeing the northern part of the tunnel, has openly discussed the challenges of drilling so far below the ocean surface.
Project manager Anne Brit Moen mentioned to Engineers Ireland, “Given our descent to 392m below sea level, our focus is on identifying the best methods to uphold safe and efficient working conditions for all. The tunnel will significantly bolster connectivity along the Norwegian west coast.”
Norwegian Public Roads Administration project manager Oddvar Kaarmo added, “We have to accomplish a lot of work simultaneously about six months after the final drilling and blasting to meet the project deadline. It’s more about managing logistics than tunneling,” as reported by the Daily Telegraph.
An art installation will be placed within the tunnel to combat monotony and ease tunnel anxiety, with hopes that this measure will reduce accidents during construction.
