Construction has officially begun on the Fehmarn Belt Link, set to become the world’s longest immersed underwater tunnel.
The tunnel, connecting Germany and Denmark beneath the Baltic Sea, will drastically reduce travel time between Hamburg and Copenhagen, cutting the journey in half.
The $7.7 billion project, funded largely by Denmark and the EU, will feature two separate roadways to ensure safety. “In terms of safety, it’s probably some of the most-safe areas to actually drive, because it’s well-designed,” said Henrik Vincentsen, CEO of the project’s Danish state-owned company.
Despite the ambitious plan, the tunnel has sparked debate. While some view it as a game-changer, others express concerns. “You are quite deep down,” Vincentsen acknowledged, referencing the 40 meters of water above the tunnel’s deepest point.
Environmentalists were initially opposed, fearing the impact of a bridge on the Baltic Sea. “It’s almost like you are creating a new country, a new culture — a united culture,” said Michael Kruse, an environmental advocate.
However, critics like Malte Siegert argue that the project mainly benefits Denmark, fearing it will harm Germany’s tourism industry.
The tunnel is expected to open in 2029.
