New South Wales road infrastructure projects

Major road infrastructure projects in New South Wales are progressing through various stages of development. The $164 million Jervis Bay Road intersection upgrade is nearing completion, with a new western roundabout opening this month following the June opening of a flyover bridge. This project is currently scheduled for completion in early 2027.

The A$4.24 billion Western Harbour Tunnel project has reached significant construction milestones. Engineers have completed the excavation of two underground reception chambers beneath Waverton, which are designed to accommodate the dismantling of the Patyegarang and Barangaroo tunnel boring machines. The Patyegarang TBM is approaching the halfway point of its 1.5km drive from Birchgrove, a stage involving a 200-metre stretch of clay, silt, and sand under the harbour. The Barangaroo TBM is expected to pass through a paleo channel by March. The tunnel is scheduled to open in late 2028.

In conjunction with the tunnel works, the Warringah Freeway upgrade is nearing completion after five years of construction. Final traffic changes are expected within weeks, including the conversion of a reversible lane into a permanent northbound lane and the opening of a new northbound on-ramp from High Street.

Additionally, construction has commenced on additional overtaking lanes for Heathcote Road to improve access to Sydney.