Tonkin Highway Extension

Thomas Road to South Western Highway

We are extending the highway by 14 km to reduce travel times and improve connectivity. Planning and development is currently underway.
Tonkin Highway <em>Extension</em>


We are extending Tonkin Highway – creating a high standard north-south transport link in Perth’s eastern corridor.

A reservation for the road extension has been included in the Metropolitan Region Scheme (MRS) for a number of years.

Preliminary concept

The project proposes to extend the highway from Thomas Road, Oakford to South Western Highway, south-east of Mundijong.

The preliminary concept includes:
  • approximately 14 kilometres of four lane dual carriageway;
  • construction and/or upgrades of intersections at Thomas Road, Orton Road, Bishop Road, Mundijong Road and South Western Highway;
  • bridges over the existing freight rail line and Perth to Bunbury rail line;
  • a shared path along the eastern side of the corridor, with planned connections to local path networks; and
  • an equine rider and pedestrian underpass under Tonkin Highway at Abernethy Road.

Complete a 2-minute survey to help us understand what's important to you and why.

Alleviate pressure on the transport network

Reduce travel times

Improve safety and connectivity

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Project Map

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Acknowledgement of country

The Government of Western Australia acknowledges the traditional custodians throughout Western Australia and their continuing connection to the land, waters and community. We pay our respects to all members of the Aboriginal communities and their cultures; and to Elders both past and present.

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