• Funding program Investment Road and Rail Program
  • Status In planning
  • Transport mode Road
  • Expected start/finish Early 2023 - TBC
  • Estimated project cost $2,540,000,000
  • Australian Government contribution $2,032,000,000
  • Local Council/Shire Blue Mountains City Council,City of Lithgow Council
  • State NSW
  • Corridor Sydney - Dubbo

Project description

This project involves the upgrade of the Great Western Highway corridor between Katoomba and Blackheath, and between Little Hartley and Lithgow.

This is the first stage of a broader upgrade to this corridor, and will address a critical missing link in terms of access through, and congestion within, the Blue Mountains.

It will separate local and through traffic, improving freight access, network efficiency, safety and community outcomes. It will also facilitate growth in the New South Wales central west.

Australian Government funding towards the construction of the East and West sections will facilitate the New South Wales Government continuing to fund the planning and development of the Central section of the Corridor between Blackheath and Little Hartley.


  • Improved road safety for all road users
  • Improved accessibility and connectivity of road networks
  • Improved connectivity between people with jobs and services, and goods with markets
  • Improved efficiency and network reliability


The Australian Government has committed $2.03 billion to this project with the New South Wales Government committing $508 million, bringing the total project funding to $2.54 billion.


This project is expected to start construction in early 2023 in Medlow Bath. Completion will be determined in consultation with the NSW Government.

Project last updated:

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