Aquädukt über die Murg, Aqueduct in Forbach, Germany

The Aquädukt über die Murg is an 1885 arch bridge of rammed concrete between Forbach-Langenbrand and Weisenbach. Its fixed arch, about 1.30 m thick, spans 40 m with a rise of roughly 5 m, and small arches on top carry the originally open channel, 2.20 m wide. Water now crosses in a pipe.

The structure was built in the 1880s using modern concrete techniques and ranks among the early examples of this construction method in Germany. The facility was created for paper production at the time and later received monument protection due to its significance for the development of concrete engineering.

The aqueduct is named after the Murg, the river it crosses between Forbach-Langenbrand and Weisenbach. It was commissioned by the paper factory E. Holtzmann & Cie., whose site at Breitwies received the diverted water; the design came from engineer Karl von Müller of Freiburg, and the Augsburg firm Thormann und Schneller built it. The water still drives a turbine today, operated by Wasserkraftwerke Murg Breitwies Schlechtau GmbH & Co. KG, using a 17-metre drop.

The aqueduct spans the Murg between Forbach-Langenbrand and Weisenbach in the northern Black Forest. The water is now carried across in a pipeline, while the intake structure sits above the Murg loop upstream of the former paper factory and a tunnel leads through the ridge to the bridge.

The round recesses in the spandrels between the small arches are only partly executed on the bridge; some are merely suggested rather than cut through. The water no longer runs in the original open channel, 2.20 m wide, but is carried across in a pipeline.