Giant road-headers are digging the second stage of the Western Harbour Tunnel in North Sydney, passing within tens of metres of the metro rail line. The $7.4 billion project, now over 60% complete, is set to provide Sydney's first new road crossing of the Harbour in over 30 years.
They are the twin transport mega-projects reshaping the way commuters move around the city – and they have passed within tens of metres of each other, deep beneath the ground in North Sydney .
The road tunnel, which passes 42 to 53 metres under North Sydney, now overlaps the massive caverns for the metro rail line, which are between 25 and 40 metres further below the surface. Late next year, massive tunnel boring machines will be assembled at Birchgrove before they start to dig their way north under the harbour to Waverton.
Western Harbour Tunnel Sydney Commuter Transport Metro Rail Tunnel Construction
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