Australasia, Australia, New South Wales, News, Projects, Transport, Tunnelling

NSW proposes Australia’s longest road tunnel

This week the state government announced it is examining the prospect of connecting two proposed tunnels into a longer tunnel as part of the Greater Western Highway upgrade between Katoomba and Lithgow. 

NSW Minister for Regional Transport and Roads Paul Toole said linking the two tunnels already determined for Blackheath and Mount Victoria would deliver a more reliable connection through the Blue Mountains. 

“The NSW Government knows how important this upgrade is to the people who use the Great Western Highway every day and in improving connections between Sydney and the Central West, which is why we committed $2.5 billion to deliver a once-in-a-generation upgrade to this key corridor,” he said. 

“As part of this upgrade, we’ve already committed to a 4.5 km tunnel to bypass Blackheath and a 4 km tunnel underneath Victoria Pass, one of the steepest roads in NSW. 

“We’re now investigating connecting those two proposed tunnels into one longer tunnel.  

This would be a history-making project, delivering Australia’s longest road tunnel and 
allow motorists to avoid all the current pinch points from Blackheath in the east to Little Hartley on the western side of Victoria Pass. 

“It will also mean less disruption for local residents and businesses during construction and a smoother, safer journey for those travelling underneath Blackheath and Mount Victoria as well as those travelling above.” 

The government said construction on the Great Western Highway Upgrade is expected to start at Medlow Bath in 2022, with the full upgrade expected to be completed within 8 to 10 years. 

For more information visit the Transport for NSW website.  

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