A86 : Le Défi d'un tunnel à double étage

The Duplex A86 is a remarkable 10-kilometer underground highway located over 90 meters beneath the surface. This extensive concrete tube, equivalent to more than 30 Eiffel towers laid down, showcases significant engineering advancements. It enables swift travel across western Paris, highlighting the ingenuity of visionary engineers involved in its creation.

The documentary delves into various aspects of tunnel construction, focusing on public works, technology, and the complexities of building such a megastructure. Keywords like motorway, duplex, and highway emphasize the project's scale and significance in modern infrastructure. Produced by VideoClub Studio and RMC Découverte, this film offers insights into the challenges and triumphs faced during the construction of this monumental tunnel, appealing to those interested in technology and engineering.