Deepest car tunnel in world costing $2 billion to build will have cars traveling 1,300 ft beneath the sea

Published on Jul 09, 2025 at 6:00 AM (UTC+4)
by Grace Donohoe

Last updated on Jul 10, 2025 at 4:52 PM (UTC+4)
Edited by Amelia Jean Hershman-Jones

The deepest car tunnel in the world is set to cost a reported $2 billion to build and will allow cars to travel as deep as 1,300 feet beneath the sea.

Called the Rogfast tunnel, this multi-billion-dollar tunnel is going to be built in Norway.

And if it all goes to plan, the tunnel could be up and running by 2033.

It’s being built for an important purpose too.

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Rogfast will be the world’s deepest car tunnel

In Norway, things are getting exciting with a new tunnel set to take motoring quite literally to completely new depths, with a reported eight million cubic meters of rock being removed to make it possible.

The Rogfast project is set to bring the deepest and longest underground travel system to life.

Not only will it measure almost 27 kilometers, it will be almost 1,300 feet beneath the sea level.

The purpose of the mammoth deepest car tunnel is to join a highway on the west coast of Norway, with the tunnel supposedly being able to cut down journey times by a substantial amount.

This includes travel times between the two cities of Stavanger and Bergen, which is any commuter’s dream.

But, as you’d expect, a tunnel beneath the sea won’t be a cheap project to complete.

In fact, the cost of the new underwater connection method is set to cost a reported $2 billion.

The construction of the tunnel is set to be complete in 2033, so in less than 10 years, 21-hour journeys could be a thing of the past.

The car tunnel is set to break records

Not only will it cost a lot, but the tunnel is also reportedly set to break records, according to engineering experts from the region, Norconsult.

These records include it becoming the world’s longest underwater road tunnel for regular traffic, the world’s longest and deepest four-lane road tunnel, and the world’s deepest road junction.

But, it’s not the only impressive tunnel in the works, there’s also a $19 trillion maglev tunnel proposal to connect London to New York.

You can take a look at all things Rogfast here, as the tunnel nears more towards completion every day.

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Grace started her career writing about the weird and wonderful for the international press. She's covered everything from lifestyle to sports and hard news and now finds herself pursuing her main interest - cars. She's loved cars from a young age and has a keen interest in luxury travel too.