On March 24, 2025, the Horizon consortium, composed of Bouygues travaux publics (leader), Soletanche Bachy and Bessac celebrated the break through of the TBM Marguerite de Catellan in the Limayrac - Cite de l’espace station, Lot 4, line C of the Toulouse metro: click here for the video.   

To date, the TBM which started  from the Montaudran Gare - Piste des Gean station, has excavated 2.7 km; its breakthrough is expected in the autumn in the future Cote Pavee station; in November it will arrive at the Saint-Sauveur shaft, concluding the excavation of its 4.2 km section.    

Click here if you want to track the TBM and for further information please click here and fr/14 for tunnelbuilder archive.