 One, the Passerelle Damiette, linked the island to the Right Bank, and the other, the Passerelle de Constantine, linked the island to the Left Bank.The construction of the pedestrian bridges was authorized by an act of 18 June 1836, in favor of M. de Beaumont, the projector, who would recoup his expenses, valued at 380.000 fr., by collecting tolls.They were constructed by the engineer Surville and opened in January 1838.