Your trip Tolls Electronic toll Know us Environment News Contact Video library Photo library Publications Living environment Respect the environment Archeology A65 Gascogne motorway Environment Respect the environment Respect the environment The water law: protection of rivers and streams Detailed hydrogeological studies specific to drinking water catchments were carried out within the framework of the water law in order to precisely assess the effects of the project. The objective was to ensure the preservation of aquatic ecosystems, wetlands, and the protection and restoration of water quality. A 6,000-page dossier was drawn up within the framework of the water law. In accordance with legislative texts, A'LIÉNOR ensures that the construction and operation of the A65 do not harm the preservation of this major resource. The fauna and the flora The project is adapted to the needs of protection and restoration of protected species. Indeed, throughout the project, A'LIÉNOR and its partners paid particular attention to respect for the environment, in particular by preserving Natura 2000 sites, the habitats of protected species such as European minks, the pond turtle. and the white-legged crayfish. Middle transparency Some measures: Hydraulic structures for crossing the motorway, large openings, have been fitted to ensure the transparency of the environment for the species and in particular for the European mink. Small fauna passages specific to semi-aquatic carnivores have been built. Large wildlife passages have also been made with suitable protection devices installed on both sides of the motorway. In order to reduce the risk of collision with birds, shrub hedges have been set up on the most sensitive stations. They also help guide bats to crossing areas. An environmental assessment comparing the initial state (before works) with its state 3 to 5 years after commissioning was carried out. © A'LIÉNOR 2016 Legal Notice Credits Eiffage Concessions Sanef APRR-AREA