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JOTunnelling in the deep! ⬇️🌊
TBMs Jessie and Ruby have both achieved a major milestone on the Sydney Metro project, tunnelling 35 metres under the water’s surface to pass beneath the deepest point of the railway alignment under Darling Harbour.
This section is the last of the challenging harbour crossings for the TBM drives. The slurry TBMs were cutting through a mix of hard and soft rock beneath the Harbour and at high water pressure, which means they’ve had to tunnel at a much slower pace than traditional open-style Sydney Metro tunnel boring machines.
No matter the conditions, our world-class tunnelling team is getting the job done. Each TBM now has less than 700 metres of tunnel left to build to reach their final destination at the future Hunter Street metro station in the heart of the Sydney CBD.
The TBMs will continue their journey under some of Sydney’s most iconic streets, including York, George and Pitt streets and pass underneath Wynyard Station to reach the Hunter Street station cavern.
Track laying and station construction will follow, bringing Sydney another step closer to the opening of the new line.
We’re proud to be shaping the future of Sydney’s transport alongside Sydney Metro and our partners CPB Contractors and Ghella ANZ.
#JohnHollandTransformingLives #SydneyMetro #Tunnelling
@johnhollandgroup
