Second tunnel package awarded for Paris metro¹s Line 14 extension21 July 2014
A consortium consisting of Bouygues Travaux Publics, a subsidiary of Bouygues Construction, Soletanche Bachy France, Soletanche Bachy Tunnels and CSM Bessac has signed a contract worth EUR 164.9M (USD 224.4M) with RATP for the second tunnel package of the Paris metro line 14 extension project, north of Paris, running from Clichy-St Ouen to Pleyel, in the neighbouring town of St Denis.
This underground infrastructure project, which is 55 per cent financed by Société du Grand Paris, is expected to relieve congestion on Line 13, improving travel conditions and access to Paris for people living in the northern suburbs.
The consortium will be responsible for constructing a 2.2km tunnel linking Clichy-St Ouen and Pleyel, including a tunnel that links to the train maintenance and marshalling zone. It will also include the construction of the Mairie de St Ouen station, and four ancillary structures, including reinforcing the infrastructures of line C of the RER (Regional Express Network).
The project, which will be carried out with an 80m long EPB machine, includes several major technical challenges, such as taking account of the diversity of soils along the route of the tunnel and the reinforcement of the infrastructures of line C of the RER, beneath which the connecting tunnel to the train maintenance and marshalling zone will pass. To meet these challenges, the consortium will analyse all the data collected from the TBM and resulting from monitoring on the surface in real time in order to have the capacity for immediate response.
The works will begin this summer and last several years, mobilising nearly 260 employees at peak periods. The companies in the consortium have undertaken to hire site workers through social inclusion schemes, providing 20,000 hours of employment.