Aqueduct Ars-sur-Moselle: A Roman Water Supply Structure in France

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Country: France

Civilization: Roman

Remains: Infrastructure

History

The Aqueduct Ars-sur-Moselle is located in the municipality of Ars-sur-Moselle, France. It was constructed by the Romans in the early 2nd century AD as part of their extensive water supply system serving the ancient city of Divodurum Mediomatricorum, known today as Metz.

During the Roman period, the aqueduct played a crucial role in transporting water from a natural spring called the “source des bouillons de Gorze,” situated roughly 22 kilometers southwest of Metz. This water was essential for supplying the city’s baths and fountains, reflecting the importance of public waterworks in Roman urban life. The aqueduct operated by gravity, relying on a carefully designed slope to maintain a steady flow over its entire length.

Following the decline of Roman authority in the region, the aqueduct gradually fell out of use. Over the medieval centuries, many of its arches were dismantled or suffered damage amid local conflicts and wars. Despite this, the structure remained a notable landmark. In the 19th century, recognition of its historical value led to its classification as a Monument Historique in 1840, ensuring its preservation as a significant example of Roman engineering in the Lorraine area.

Remains

The Aqueduct Ars-sur-Moselle originally stretched nearly 22 kilometers, with about 1.125 kilometers consisting of elevated arches that cross the Moselle valley. These arches, reaching heights up to 30 meters, showcase the advanced construction techniques employed by Roman engineers in the 2nd century AD. The aqueduct’s design allowed water to flow by gravity from the upstream source toward the city of Metz.

Near Ars-sur-Moselle, the aqueduct begins as an underground channel before emerging as a series of above-ground arches. Seven of these arches remain near Ars-sur-Moselle, while sixteen more survive near the neighboring area of Jouy-aux-Arches. From the downstream Roman basin, the aqueduct continues underground toward Metz, maintaining the water’s course into the city.

Constructed primarily from stone blocks, the aqueduct’s materials have endured through centuries. The local legend that some stones were blessed by pagan priests reflects the cultural significance attributed to the structure beyond its practical function. Today, parts of the aqueduct remain well-preserved, allowing a clear view of its scale and the quality of Roman masonry.