Latest Tunnels News

Sydney Metro report highlights ‘significant technical and budget risks’

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A government report has revealed Australia’s biggest infrastructure project, the Sydney Metro scheme, is currently facing “significant technical and budget risks”.

The Sydney Metro project involves three different schemes, Sydney Metro West, City and Southwest and Western Sydney Airport. Due to procurement issues with the Sydney Metro West scheme, the overall…

Tideway | 4.5km Greenwich connection tunnel completed

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The Thames Tideway Tunnel has hit another milestone with the completion of the 4.5km Greenwich connection tunnel between Greenwich and Bermondsey.

This section of tunnel stretches from Greenwich Pumping Station to Chambers Wharf, where it connects with the main super sewer. It will tackle sewage overflow into the Deptford Creek and…

HS2 TBMs complete three quarters of Chiltern tunnels

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The two tunnel boring machines (TBMs) delivering the longest tunnels on the High Speed 2 (HS2) railway have passed the three quarters mark.

TBMs Florence and Cecilia have completed over 12km of the 16km Chiltern twin-bore tunnels, passing the fourth of five ventilation and emergency access shafts, 800m from the village…

Tunnelling completed on Silvertown Tunnel’s second bore

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The main tunnelling works for Transport for London’s (TfL’s) Silvertown Tunnel are complete, with the second of two bores beneath the River Thames now fully excavated.

The 1.4km Silvertown road tunnel will link Silvertown in Newham to the north of the River Thames with the Greenwich Peninsula, close to the O2…

Blackwall Tunnel southbound to undergo refurbishment works

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Tarmac Kier JV will carry out a refurbishment programme on London’s Blackwall Tunnel southbound next year that will include highway works, cladding replacements and electrical works.

The Blackwall Tunnel consists of two road tunnels carrying the A102 under the Thames between the London Boroughs of Tower Hamlets and Greenwich. The original…

HS2 TBMs reach London tunnelling milestone

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The first two tunnel boring machines (TBMs) launched for High Speed 2 (HS2) in London have completed the first mile (1.6km) of their drives for a twin bored tunnel.

TBMs Sushila and Caroline were launched by SCS (Skanska Costain Strabag JV) in October last year from the HS2 site in West…