asher__jo
Active Member
I was going to reference the exact same project. Was it complex and expensive? Sure, but it's not the impossibility that is being disseminated to the media.Almost 4 metres clearance seems huge compared to the clearances that the TBMs for Crossrail did - less than a metre in places - without even closing the other tube line in London - at least at Tottenham Court Road.
Though looking at the illustration, I'm not sure why they couldn't build the portal near Labelle, with cut and cover between there and Sanguinet to simply and safely work around the existing tunnels. This would also allow for construction of a station between those locations, connecting to Metro Berri.