The station has reached the T-12 landmark meaning it is now 12 weeks away from being ready for handover to Transport for London who will operate the Elizabeth line.
Work at the station will now focus on the extensive testing and commissioning of systems ahead of the Elizabeth line opening planned for the first half of 2022.
Custom House was the first of the new Elizabeth line stations to be handed over to TfL last year and Farringdon station also reached its own T-12 landmark just before Christmas.
Declan Mcgeeney, Director of UK Infrastructure at Laing O’Rourke, said: “This is a significant achievement by our construction team and I thank them for their commitment and hard work.
“The station has created some interesting engineering challenges to solve, including constructing the line’s only curved platform for the routeway to avoid the foundations of Centre Point.
“We’ve worked in close partnership with Crossrail and London Underground to create a state-of-the-art station and are proud to be part of the team delivering a world-class piece of infrastructure that will improve the journeys of millions of people for many years to come.”
During its redevelopment Tottenham Court Road has undergone a major transformation.
The sweeping 230-metre-long Elizabeth line platforms and ticket halls at either end support the new buildings at Dean Street in Soho and below St Giles Circus on Oxford Street.
Both have drawn their look and feel from the night and daytime economies at the surface.
Facilities for passengers have been vastly improved and include a new public plaza and station entrances outside Centre Point.