Reid Highway and Erindale Road – major upgrade

08 April 2026

Main Roads WA have commenced preliminary surveys to upgrade the Reid Highway and Erindale Road intersection into a grade-separated interchange.

The intersection 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 and the Balcatta light industrial area.

Key features of the upgrade include:

  • A bridge carrying Erindale Road over Reid Highway
  • Loop ramps in the northeastern and southeastern quadrants for full connectivity
  • A new free-flow southbound ramp from Reid Highway westbound to Mitchell Freeway southbound
  • Upgrades to the signalised intersection at Erindale Road and Balcatta Road to accommodate the increased traffic into the Balcatta light industrial area
  • Modifications to the Reid Highway and Balcatta Road intersection from the Mitchell Freeway southbound exit ramp
  • Upgrades to the Principal Shared Path (PSP) along Reid Highway including new underpasses and overpasses providing improved connection to the PSP on the eastern side of the Mitchell Freeway.

For further information, updates and plans visit the Main Roads website, where you can subscribe for updates.

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