The Tonkin Highway is a 44-kilometre north-south highway and partial freeway in Perth, Western Australia, linking Perth Airport with the city's north-eastern and south-eastern suburbs.
The WA Government has been progressively undertaking improvements to the Highway's corridor across four projects.
- Tonkin Highway Gap
- Tonkin Highway Extension Stage Three
- Tonkin Highway Grade Separations, and
- North Ellenbrook Interchange.
The Grade Separations project will see Tonkin Highway widened from four to six lanes and grade separations delivered at Hale Road, Welshpool Road and Kelvin Road.This project is to be delivered using two Design and Construct contracts.
- Hale Road and Welshpool Road, and
- Kelvin Road.
The Kelvin Road contract will see an interchange delivered at Kelvin Road and the balance of Tonkin Highway widening.
Key Dates
| Oct 2024 | EOIs Open |
| Nov 2024 | EOIs Close |
| Jan 2025 | RFP Open |
| Apr 2025 | RFP Close |
| Jun 2025 | Expected Contract Award |
| Aug 2025 | Expected Contract Award |
| 2025 | Expected Construction Commencement |
Funding contributions
| Federal Government | |
| WA Government | |
|
The Federal and WA Government have provided joint funding for both grade separation contracts. The total funding for each contract has not been publicised. These funding contributions represent the total value of both contracts. |
|
Procurement
| Procuring Agency: | Main Roads Western Australia |
PROJECT HISTORY
| May 2019 | The project was allocated funding as part of a $1.2 billion funding package announced in the 2019-20 WA Budget. |
| Mar 2021 | The project was submitted to the Western Australia EPA for referral. |
| May 2021 | The Western Australian EPA announced the project would be subject to environmental assessment. |
| Aug 2021 | The Government of Western Australia released new designs for Tonkin Highway and Hale Road interchange following community consultation. The new designs directly connect Tonkin Highway northbound and Hale Road via a new road that will be constructed alongside the highway. |
| Sep 2021 | Following a review of its Asset Investment Program, the WA Government announced a delay to the project's completion. The Welshpool Road and Hale Road projects have been deferred by one year, and completion is expected in mid-2025. |
| May 2022 | The 2022-23 WA Budget allocated an additional $250 million toward the Tonkin Highway Grade Separations at Hale, Welshpool and Kelvin Roads and Stage Three Extension projects. |
| Sep 2022 | Mainroads WA announced early works had commenced on the project. |
| Oct 2022 | Public consultation commenced on the Western Australian EPA portal, closing 13 November. |
| Aug 2024 | The Western Australian EPA published an assessment report on the project. |
| Oct 2024 | The Government of Western Australia commenced procurement for the project, issuing an Expression of Interest for a Design and Construct contract for the interchanges at Hale Road and Welshpool Road. |
