| Napoléon Bonaparte - Emperor of the French | Originating the idea in 1808. |
| Adolphe Alphand - Engineer and urban planner | Author of the 1891 report. |
| Henri Faisans - Mayor of Pau | Project promoter at the end of the 19th century. |
| Léon Say - Local Deputy | Political support for the project. |
| Paul Larregain - Director of Work | Construction supervisor until 1899. |