Not mentioned is the total cost of the project, estimated at around 2.7 billion Euro for 10-15 years of life expectancy according to the industrial manufacturer

Not mentioned is the total cost of the project, estimated at around 2.7 billion Euro for 10-15 years of life expectancy according to the industrial manufacturer (Colas). There is a very long way, in France, between political declarations of intention and actions, so I'm betting this will never be done. Which would probably be for the best, a predictable failure such as this project would slow down development of renewables in France even more.