Valorization of the land of the Grand Paris Express

The Grand Paris Express comprises 200 km of automated lines, the same length as the current metro, and 68 stations, which will comprise the four new metro lines 15, 16, 17, and 18, and will extend line 14 to the north and south.

These metro lines, primarily underground, will result in the construction of structures and the digging of tunnels around the capital by 2030. This work will generate some 43 million tons of excavated earth. With 300 construction sites underway in the Île-de-France region, approximately 2,000 tons of earth—the equivalent of around 100 trucks or a river barge—will be removed from construction sites across the Grand Paris Express project every day.

This is why the Société du Grand Paris and Néo-Eco have launched a study on the land reclamation of the Grand Paris Express project. The goal: to imagine solutions for recovering backfill that would allow it to be used as resources, in a virtuous circular economy approach from both an environmental and economic point of view.