The 130-metre trailer of TBM Victoria is being removed via the shaft at Stepney Green and returned to manufacturer Herrenknect.
The parts will be recycled for future tunnelling projects. The cutter head is being cut into small pieces and removed from Farringdon.
Crossrail eastern tunnels project manager Roger Mears said: “Crossrail’s last tunnelling machine, Victoria, has finished her journey and is being dismantled and recycled. Thanks to the quality of these marvellous machines and skill of the teams who operated them, Crossrail’s tunnels are now complete, ready for the complex task of fitting out the railway.”
Over the last three years, eight 1,000-tonne tunnel boring machines have drilled 42km (26 miles) of new 6.2-metre diameter rail tunnels under London, weaving between existing underground lines, sewers, utility tunnels and building foundations from station to station at depths of up to 42 metres.