The mile-long tunnel will be big enough to allow cruise ships and ferries to take a shortcut along the coast of Norway. More significantly, it would allow the ships to avoid the rough seas around the Stadlandet Peninsula where 33 people have died since WWII. Sailing along the rest of the coast is safer because the little islands and fiords offer protection. The tunnel would be 120' high and 87' wide, blasted out of rock and cost $271m (2.3b Norwegian krone) [2017]. That is already more money than the tunnel is projected to earn. But the main selling points are convenience and safety. [SmithsonianMag]
The yellow line indicates were they plan to dig it.
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| Satellite plus paint |
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| Illustrasjon: Kystverket/Snøhetta/Plomp via Gallery via Norwegian Coastal Administration, License: CC BY-SA 2.0 The estimated cost is up to 3.45b NOK. |
If I remember correctly, most of the economic activity of Norway is along the coast and ferries are an important part of that economy because the fjords and mountains make it hard to connect the towns with roads and railroads.
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| Kystverket/Snøhetta/Plomp via B1M, License: CC BY-SA 2.0 "Costing over USD $300M and taking three-to-four years to complete." It will shorten a two-hour trip down to 12 minutes. Even though the tunnel is being blasted out of rock, the roof will be reinforced with concrete for stability. There is a lot of local tunneling expertise because Norway has over 1000 road tunnels. Once the top layer is dug and cofferdams are installed at either end, it becomes a very horizontal quarry operation in terms of the type of equipment used and the reuse of the rock. The project is expected to take 3-4 years. |
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| Anne Grethe Nilsen/Kystverket via B1M, License: CC BY-SA 2.0 |
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| Norwegian Coastal Administration/Snøhetta via B1M, License: CC BY-SA 2.0 |
11:43 video non-platitude information starts around 4:30
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