Dunkeltalbrücke, Railway bridge in Goldisthal, Germany

The Dunkeltalbrücke is a railway bridge that crosses a valley near Goldisthal and was built as a reinforced concrete arch structure. The structure connects two hillsides and allows rail traffic to pass through the mountainous landscape of Southern Thuringia.

Construction began in 2010 as part of the Nuremberg-Erfurt high-speed railway project and was completed in 2013. This project enabled a direct and efficient rail connection through the region's complex terrain for the first time.

The bridge carries the Ebensfeld–Erfurt high-speed line between kilometres 134.779 and 135.070, close to the line's highest point. Its deck holds a ballastless track with 4.5 m rail spacing and a noise barrier on the eastern side. In the valley floor below run the Lauterborn stream and a forestry road.

The bridge spans the Dunkeltal valley west of Goldisthal, between the Grubentalbrücke and the Rehberg tunnel. The valley floor, where the Lauterborn stream and a forestry road run, is the closest accessible point; the track itself lies up to 65 m above. The bridge carries the Ebensfeld–Erfurt high-speed line and has a noise barrier on its eastern side.

The arch spans 141 m with a rise of 33.9 m and was built on a temporary falsework carried by five towers up to 52 m tall. The deck sits at most 65 m above the valley floor, where the Lauterborn stream and a forestry track run. The bridge carries a slab track with 4.5 m track spacing and a noise barrier on its eastern side.