Major Contract

Great Western Highway Upgrade - Blackheath to Little Hartley

Detailed Planning
Great Western Highway Upgrade - Blackheath to Little Hartley

In March 2019, the NSW Government announced that it would duplicate the Great Western Highway, from Katoomba to Lithgow over the next 10 years.

The Blackheath to Little Hartley section involves construction of a four-lane motorway, which includes a Mount Victoria Bypass.

The project has two options for the bypass, including:

  • a single 10.2-kilometre tunnel between Blackheath and Little Hartley, bypassing both Blackheath and Mount Victoria, and
  • a combination of two separate 4.1-kilometre tunnels bypassing Blackheath and Mount Victoria, with a surface road upgrade between Blackheath and Mount Victoria.

Key Dates

Mar 2019 Project Announced
2023 Expected Construction Commencement
2026 Expected Construction Completion


Procuring Agency: Transport for NSW


Mar 2020 Transport for NSW called for tenders to prepare a Strategic Business Case and Economic Analysis for priority projects in the Great Western Highway Upgrade Program. The successful bidder may also be required to prepare two Final Business Cases for priority projects, as determined during the development of the strategic business case. The tender process is open until 9 April 2020.
May 2021 The Federal Government announced $2 billion in additional funding for the Great Western Highway Upgrade in the 2021-22 Federal Budget. The NSW Government also announced that it is investigating linking the tunnels at Blackheath and Mount Victoria to create a single 11-kilometre tunnel for the project.
Jun 2021 The NSW Department of Planning, Industry and Environment Secretary's Environmental Assessment Requirements (SEARs) were requested for the Blackheath to Little Hartley section of the project. The 2021-22 NSW Budget also allocated $2 billion toward the Great Western Highway Upgrade over the next four years, including $132 million in FY2021-22. It is unclear how much this will be allocated toward the Blackheath to Little Hartley section.
Jul 2021 The NSW Government issued a Request for Tenders for the Technical Advisory Services and Environmental Assessment Services contracts for the project, closing on 21 and 30 July respectively.
Procurement approach
Unconfirmed |
New South Wales |
Infrastructure Australia status
Priority Initiative (near-term, 0-5 years)
Government resources
Scoping Report - June 2021
Media releases
Project pages
Transport for NSW