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Home > Crossrail East Tunnels complete

Crossrail East Tunnels complete

Tris Thomas

Written by Tris Thomas on 21/10/2014 in News

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Crossrail’s train tunnels in Docklands and southeast London are now structurally complete, following the breakthrough by TBM Ellie at Victoria Dock Portal in east London.

Also announced, TBM Elizabeth has started the final push west from Whitechapel that will see her and sister machine Victoria complete Crossrail’s train tunnels at Farringdon next year.

Ellie had one of Crossrail’s shortest but most complex drives, 900m from Limmo Peninsula, near Canning Town, to Victoria Dock Portal. Ellie successfully navigated the Docklands Light Railway, Jubilee line and utilities, all in close proximity to the River Thames and River Lea. She completes a set of Crossrail tunnels in east and southeast London that stretch from Plumstead to Whitechapel, with an additional spur between Stepney Green and Stratford.

It is Ellie’s second drive, having already completed a 2.7km stretch from Pudding Mill Lane to Stepney Green. She will now be dismantled and returned to manufacturer Herrenknecht, with the parts recycled for future projects.

Simon Wright, Crossrail’s Programme Director said: “The end is in sight for Crossrail’s tunnelling marathon. Having successfully delivered all bored tunnels west of Farringdon and east of Whitechapel, we now begin the final push to complete tunnelling at Farringdon next year. The next challenge is to fit out the tunnels and stations with systems to run Crossrail trains through central London in 2018.”

Tunnel machine Elizabeth is 60% through Crossrail’s longest drive, a distance of 8.3km from Limmo to Farringdon. She has already successfully negotiated Canary Wharf Crossrail station and Stepney Green cavern, before waiting in Whitechapel ahead of the completion of a shaft beneath Durward Street. The drive to Farringdon will reach the deepest point on the Crossrail route, approximately 40m beneath street level near the Barbican in the City of London.

Each of Crossrail’s eight tunnel boring machines weighs 1,000 tonnes, is up to 150 metres long and 7.1 metres in diameter. They are staffed by teams of 20 working around the clock. Crossrail’s eastern tunnels are built by Dragados Sisk Joint Venture.

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