Drogden Tunnel, connection between Peberholm and the artificial peninsula at Kastrup on Amager island
The Drogden Tunnel is an underground passage approximately 4050 meters long that connects the Danish island of Amager with the Swedish island of Peberholm. It consists of two separate tubes for cars and trains plus an additional emergency tube, constructed from 20 massive concrete sections placed in a trench on the seabed.
Designed in the mid-1990s to allow passage across the Øresund Channel without disrupting maritime traffic or risking winter ice damage, the tunnel opened to traffic in 2000. Since then, it has remained an essential link connecting Copenhagen and Malmö.
The tunnel takes its name from the Drogden Channel it runs beneath, representing the modern everyday connection between Denmark and Sweden. For commuters and travelers, passing through has become a routine experience that brings the two countries closer together.
Driving or taking the train through the tunnel takes only a few minutes, as it runs directly beneath the seabed. Modern lighting and ventilation systems operate continuously to keep the journey safe and comfortable for all users.
The tunnel was intentionally submerged beneath the seabed to avoid interfering with aircraft from nearby Copenhagen Airport and to allow ships to pass freely above. The artificial island Peberholm, created as part of the project, has developed into a nature reserve that now provides habitat for rare bird species.
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