The Canal de Brienne (also known as the 'Canal de Saint-Pierre') is a French canal connecting the Garonne River with the Canal du Midi and the Canal de Garonne. It has two locks. The lock opening to the Garonne is known as Ecluse Saint-Pierre. The lock nearer to the Canal du Midi usually stands open. The canal is in the center of Toulouse. It is named after Etienne Charles de Lom'nie de Brienne (1727-1794), archbishop of Toulouse. At the joining with the Canal du Midi is the Ponts Jumeaux (Twin Bridges).