Great Western Highway
East - Katoomba to Blackheath


View the REF Consultation Sessions View the flythrough video

Together the Australian and NSW Governments are investing $2.5 billion towards upgrading the Great Western Highway between Katoomba and Blackheath, and between Little Hartley and Lithgow, respectively. The Great Western Highway Upgrade will reduce congestion, deliver safer, more efficient and reliable journeys for those travelling in, around and through the Blue Mountains, and better connect communities in the Central West.

Transport for NSW (Transport) is proposing to widen the Great Western Highway between Katoomba and Blackheath to two lanes in each direction. The upgrade is split into two sections:

  • Katoomba to Medlow Bath between Rowan Lane, Katoomba and Bellevue Crescent, Medlow Bath (about 3.5 kilometres)

  • Medlow Bath to Blackheath between Station Street, Medlow Bath and Tennyson Road, Blackheath (about 1.8 kilometres)

The consultation period for the Katoomba to Blackheath Upgrade (East) closed on 19 June 2022. Transport for NSW (Transport) is now reviewing submissions and will prepare a Submissions Report in response to submissions which will be released later this year.

What is an REF?

Transport has legal obligations to assess and mitigate impacts that may result from a proposed activity. An REF details these legal obligations, and the environmental impacts and proposed mitigation measures of a project. Your input is important in helping to design the best upgrade we can for Katoomba to Blackheath. We invite you to review the proposed plans, understand the environmental impacts and have your say.

Contact Us

For more information about the Great Western Highway Upgrade Program, please contact the project on:

improved road safety infographic
reduced congestion infographic
travel time savings infographic
freight efficiency infographic

Using this portal

The Little Hartley to Lithgow REF has been made available in this web portal through a brief summary shown in the interactive map. The entire REF and individual chapters are available for more in-depth discovery here.