John Holland, CPB Contractors (CPB) and Ghella joint venture (JCG JV) have been awarded the Eastern Tunnelling contract to deliver 3.5 km of metro rail tunnels between The Bays and Hunter Street in the Sydney CBD.  

This is the third and final major tunnelling package awarded on this project, and is the last piece in the tunnelling puzzle to build the 24-km metro rail tunnels from Westmead to the Sydney CBD.  

The Eastern Tunnelling contract includes:   

• 3.5 km tunnels from The Bays to the Sydney CBD;  
• A TBM launch site at The Bays where two TBMs will be launched towards Hunter Street; the TBMs will cross the harbour near the Anzac Bridge, before heading to the new Pyrmont Station and then under Darling Harbour before reaching Hunter Street Station in the heart of the CBD. 
• A turnback cavern to the east of the new Hunter Street Station, allowing trains to turn around before travelling back towards Parramatta;   
• Excavation and civil works for two new cavern stations at Pyrmont and Hunter Street in Sydney CBD;  
• More than 8,000 segments to line the tunnels.    

Preparations for tunnelling on this final section of the line will start next year, with 2023 gearing up to the be the year of tunnelling for Sydney Metro West. Work is already underway to prepare for construction of the twin tunnels between The Bays and Sydney Olympic Park, and between Sydney Olympic Park and Westmead. TBMs are expected to start work in early 2023.  

Visit https://www.sydneymetro.info/ and https://ghella.com/en/. 48/22.