​Roe Highway and Kalamunda Road Interchange

The State and Federal Governments have allocated $86 million to build an interchange at the busy Roe Highway and Kalamunda Road intersection.

Roe Highway is part of a key road corridor linking Kwinana Freeway to Great Northern Highway, providing access to Kewdale, Hazelmere and Canning Vale industrial areas. Kalamunda Road is one of the last remaining signalised intersections on Roe Highway.

This project is part of a $2.3 billion package of road and rail infrastructure works, funded by the Australian ($1.6 billion) and State ($750 million) Governments.

Latest news

As part of the environmental assessment process for the project, the Commonwealth Department of the Environment and Energy is currently assessing preliminary documentation provided by Main Roads.

We are working closely with the Commonwealth Government to provide all information required to enable this assessment to be completed in a timely manner.

Concurrently, the procurement process is being finalising, following a competitive tender period in the latter half of 2018. A contract for design and construction of the interchange is likely to be awarded later in the year. 

Preliminary Documentation for Public Comment

Main Roads proposes to upgrade the intersection of Roe Highway and Kalamunda Road to a grade separated interchange (EPBC 2018/8316). The proposed action occurs within High Wycombe, Western Australia. Construction will require the clearing of habitat for fauna protected under the Environmental Protection and Biodiversity Act 1999 (EPBC Act).

The proposed action has been determined to be a controlled action under the EPBC Act and will be assessed through Preliminary Documentation. The controlling provision under Part 3 of the Act is listed threatened species and communities (section 18 and 18A).

In accordance with Section 95A(3) of the EPBC Act, Preliminary Documentation related to the proposal is available for viewing and comment for a period of no less than 10 business days. All submissions must be received by close of business Wednesday 1 May 2019. Please download the Preliminary Documentation.

All comments are to be addressed to Project Manager, David Wilson, on 138 138 or email enquiries@mainroads.wa.gov.au.   

Scope of works

This project involves construction of a grade-separated intersection at the Roe Highway and Kalamunda Road intersection including a new bridge, two roundabouts and on and off ramps.

Kalamunda Road is likely to flow over Roe Highway. This will minimise noise and visual intrusion for the surrounding residential area.

A shared path is included on the eastern side of the highway and on Kalamunda Road, with local links provided for pedestrians and cyclists.

New drainage, street lighting and other supplementary works will complete the interchange.



 Image: Concept plan


Key benefits

  • Reduce congestion
  • Improve road safety by enabling Roe Highway through-traffic to flow freely
  • Improve access and reduce journey times in Perth’s eastern suburbs
  • More efficient, reliable movement of freight



​Key dates

Note the following dates are subject to change

  • May 2018: Expressions of Interest
  • August 2018: Requests for Proposal
  • Mid-2019: Construction
  • 2020: Construction complete


Last Updated: 15 April 2019