Tunnel breakthrough on Line 4 in Paris

28 January 2011 - New contracts - France

On 25 November, the task of driving the tunnel extending Line 4 of the Paris metro was completed, in the presence of Nathalie Kosciusko-Morizet, French Minister for Ecology, Sustainable Development, Transport and Housing, when the headwall at the future Mairie de Montrouge metro station was broken through.

Launched in March 2009 by a consortium notably including Soletanche Bachy Tunnels, a subsidiary of Soletanche Freyssinet (VINCI Construction), the driving of this 817 m-long tunnel – linking the Porte d’Orléans neighbourhood (vicinity Square du Serment de Koufra) to the heart of Montrouge – had taken 20 months.
The extension is scheduled to come into service in mid-2012.