The Pont Marengo (Marengo bridge) crosses the Canal du Midi and links Carcassonne to the local railway station.
The busy canal lock at Port Marengo is a tourist attraction as the canal boats work their way along the canal. The bridge is named after the Battle of Marengo at which Napoleon defeated the Austrians in 1800, and a plaque on the bridge dates the construction to that year (or year 8, as it is given in the French Republican calendar).
A little way down from the bridge the railway line crosses the canal and here there is a small plaque and garden commemorating the maquisards who were executed here by the Nazis.