In early 2026, the tunnel boring machine will arrive on site in Bobigny (93), at the Normandie Niémen structure, to be progressively assembled.
In spring, it will begin its southward excavation, tunneling just over 5 kilometers towards the Marcel Dassault ancillary structure, north of the Rosny Bois-Perrier station (93).
In total, 4 tunnel boring machines are planned for this contract.
Thank you to our partners Demathieu Bard, Setec, and Arcadis!
Credit: Eiffage
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