The water of the Craponne canal arrives from Crau lowland thanks to the Roman aqueduct which crosses the roundabout of Pont de Crau and continues towards the Alyscamps. The canal then circulates in Arles to reach the Rhône. This aqueduct, built between 1585 and 1587 and classified as a historic monument, allowed to cross the swamp area present at the entrance to Arles. Part of this aqueduct was demolished during the construction of the road, so the canal goes underground at this level.