 The project will involve the construction of four tunnels and eleven viaducts.In exchange, the company will receive the proceeds of the tolls, and by order of Jean-Louis Borloo, a subsidy from the local governments of between €520 and €700 million.Another goal is to open up the urban agglomeration around Saint-Étienne, in addition to serving as an alternative to the A47, which suffers from high traffic, and has a reputation for frequent accidents and having obsolete facilities.