Reid Highway and Erindale Road Grade Separation

Reid Highway is a key east-west arterial road in Perth’s northern suburbs, linking two major north-south corridors: Mitchell Freeway to the west and Tonkin Highway to the east. Recent investments have focused on upgrading Reid Highway by progressively replacing at-grade signalised intersections with interchanges that enable free-flowing traffic.

The intersection of Reid Highway and Erindale Road is the last remaining at-grade intersection between Mitchell Freeway and Tonkin Highway. It plays a vital role in the broader road network, facilitating access to residential suburbs such as Hamersley and Warwick, as well as the Balcatta light industrial area.

This intersection carries approximately 83,000 vehicles per day and was ranked the most congested intersection in Western Australia in 2023/24. It also recorded the highest number of reported crashes in the Perth metropolitan area.

The project is expected to significantly improve the daily commutes for residents in Balcatta, Hamersley, Warwick, and other northern suburbs, by easing congestion and delivering safer, more efficient roads. Key benefits include:

• Reduced congestion and improved travel times along both Reid Highway and Erindale Road
• Improved travel time reliability and productivity for freight traffic, particularly for access to the Balcatta industrial area
• Greater travel time consistency for all road users
• Improved accessibility and connectivity between Reid Highway, Mitchell Freeway, and Erindale Road
• Upgrades to the Principal Shared Path network, improving safety and connectivity for vulnerable road users including, pedestrians and cyclists.

 Funding

Funding of $450 million has recently been committed to undertake the development and delivery of these works, with 50/50 funding from the State and Federal governments.