Riding the Hindenburgdamm

A causeway is essentially an elevated road or railway built across a shallow body of water or wetland. Unlike a bridge, it usually rests on a solid earth and rock foundation, drastically altering the local hydrodynamics but providing incredibly stable transit routes.

The Pride of Sylt

Opened in 1927, the Hindenburgdamm connects the North Frisian island of Sylt to mainland Schleswig-Holstein, Germany. Spanning 11 kilometers through the ecologically sensitive Wadden Sea, this causeway is entirely dedicated to rail traffic. Because Sylt is a car-free island (to an extent), vehicles must be loaded onto the "Sylt Shuttle" auto trains.

Sitting in the upper deck of a passenger car on the Sylt Shuttle during high tide offers a remarkable experience. The muddy flats of the Wadden Sea disappear, replaced by the choppy, grey-green waters of the North Sea right outside the window.

The Environmental Balancing Act

Constructing a solid wall of stone and sand across a tidal ecosystem has profound effects. The Hindenburgdamm interrupted natural tidal flows, leading to sediment buildup on the mainland side. Modern civil engineering emphasizes causeways with massive culverts and relief bridges to allow water and marine life to pass through unhindered.