Major Contract

Tonkin Highway Improvements - North Ellenbrook Interchange

PROJECT STATUS
Under Procurement
Tonkin Highway Improvements - North Ellenbrook Interchange

The Government of Western Australia is delivering a new interchange on Tonkin Highway, north of Ellenbrook. The interchange will be located between Warbrook and Maralla roads, and includes delivery of a grade separated urban interchange, grade separation of existing pedestrian infrastructure and new pedestrian paths.

Key Dates

May 2022 Project Announcement
Jul 2025 EOIs Open
Aug 2025 EOIs Close

Funding contributions

Federal Government
WA Government

Financing

The Government of Western Australia has signalled the project will receive $25 million in private investment, however no further details have been publicly announced.

Procurement

Procuring Agency: MainRoads WA

PROJECT HISTORY

Jul 2025 Main Roads Western Australia has opened Expressions of Interest for the design and construction of the project, closing 27 August.
Estimated Total Cost
(2022)
Sector
Road
Procurement approach
Design and Construct (D&C) |
Location
Western Australia |
Resources
Media releases
2022/05/08