Beyond the Diaphragm

The teeth of the TBM pierce the final wall. There is no more rock. Only people, and an embrace beneath Paris. After kilometers of excavation, where engineering moves in step with human determination, a moment arrives that makes it all worthwhile. This is the breakthrough. The natural barrier gives way, the space opens, and for the first time the two fronts meet.

Within the Grand Paris Express, Europe’s largest sustainable mobility project – where Webuild has delivered part of Metro Line 14 South and Line 16, and is today at work on the new Line 15 -mechanical moles advance slowly and relentlessly. They pass through neighborhoods, infrastructure, even beneath the runways of Orly Airport, where every vibration must be controlled to the millimeter. Above, aircraft take off and land. Below, men and women are reshaping the connections of the French capital.

Facts & Figures

The Grand Paris Express will deliver 200 km of new metro lines and 68 stations, including four fully automated lines (15, 16, 17 and 18), alongside the extension of Line 14. Once completed, it is expected to carry around 2 million passengers per day, reducing road traffic and cutting CO₂ emissions by approximately 14 million tons by 2050.