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Major Project of the Year (over €500M)

John Holland CPB Ghella Joint Venture Tunnelling and Station Excavation Works for the Sydney Metro City & Southwest Project

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Sydney Metro is Australia’s biggest public transport project. The City & Southwest project aims to extend the Metro North West rail line from Chatswood through to the Sydney CBD and beyond to Sydenhamand Bankstown.
It is Australia’s first project to have five tunnel boring machines (TBMs) building tunnels simultaneously including under iconic Sydney Harbour and through the congested underground CBD environment, while roadheaders created some of the largest caverns in Australia.
Many achievements were implemented for this massive projects such as : 2 dives and permanent portal structures, 3 underground mined stations, 1 crossover cavern, 3 open station boxes, 3 shafts and 1 tanked station box structure. Impressive works were also operated with the excavation of 2 twin 15.5km fully lined tunnels between Chatswood and Marrickville with 57 cross passages.