Medlow Bath looking north.

Great Western Highway Upgrade Program

The Great Western Highway is one of Australia’s most historic roads and a key east-west connection out of Sydney. Over the last 100 years, the NSW Government has progressively upgraded sections of the highway to make it safer and more reliable.

In 2018, $30 million was announced to upgrade the highway between Kelso and Raglan.

In 2019 the NSW Government committed $2.5 billion to the duplication of the Great Western Highway between Katoomba and Lithgow, a project that complete the final 34 kilometres of a modern dual-carriageway link over the entire Blue Mountains.

In 2021 the Federal Government committed a further $2.03 billion towards upgrading the Great Western Highway between Katoomba and Blackheath, and between Little Hartley and Lithgow.

Important safety improvements have been delivered through the safety upgrade program along the Highway at Blackheath, Mount Victoria and Forty Bends. This work has seen improved road surfaces, intersection upgrades and lane widening delivered as part of the $250 million investment by the Australian and NSW governments.

Latest news

SEP 2022

SEP 2022Coxs River Road Upgrade early works contract awarded

Countdown to the start of work on Great Western Highway upgrade

The countdown is on to the start of work on the Little Hartley to Lithgow section of the Great Western Highway upgrade with Ausconnex awarded the contract to carry out early works at Coxs River Road.

View the media release for more information.

AUG 2022

AUG 2022Medlow Bath Pedestrian Bridge design briefings

Transport is seeking local representatives to be part of briefings to discuss the Medlow Bath pedestrian bridge design.

Representatives will join the briefing sessions and help us focus on local values and the concept design before they are presented to the wider community.

If you would like to apply, download a copy of the nomination form and terms of reference on the Web portal. Applications must be lodged by Sunday 11 September and emailed to


Media releases

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18 August 2022

Seeds for tomorrow's Great Western Highway

14 June 2021

Safer passage through Medlow Bath ahead of full highway upgrade

14 June 2021

Great Western Highway upgrade powering ahead

28 May 2021

$8.5 million road safety investment extends to Meadow Flat School



Contact us

If you have any questions or would like more information please contact our project team:

Phone: 1800 953 777


Post: Great Western Highway Upgrade Program - PO Box 334, Parkes NSW 2870

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