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 |
| Oct 2026 | Contract Award |
| Dec 2026 | Expected Construction Commencement |
| Dec 2028 | Expected Construction Completion |
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 |
| Successful Tenderer: | BMD Constructions |
PROJECT HISTORY
| Jul 2025 | Main Roads Western Australia has opened Expressions of Interest for the design and construction of the project, closing 27 August. |
| Oct 2026 | The Western Australian Government announced that BMD Constructions had been awarded the main works contract to deliver the project. |
Estimated Total Cost
(2022)
Sector
Road
Procurement approach
Design and Construct (D&C) |
Location
Western Australia |
Resources
