The TBM, Mary, started her journey in May and has broken through into the station box at Woolwich, marking the half-way point of tunnelling south of the river. During the TBM’s three month journey, Mary has excavated almost 110,000t of material and installed 811 concrete rings to line the inside of the tunnel.
The first TBM, named Sophia, reached the Woolwich box in May and is now ready to leave the box on the drive northwards below the Thames.
Gus Scott, project manager for Crossrail’s Thames Tunnel, said: "It’s great to know that we’re half way through our tunnelling in southeast London. Mary and Sophia have done a fantastic job so far, between them constructing a mile and a half of brand new tunnels from Plumstead to Woolwich."
