Tonkin Gap Project and Associated Works

Tonkin Highway – Collier Road to Dunreath Drive, including Guildford Road interchange

Upgrading the highway with additional lanes, new interchanges, bridges and a shared path between Collier Road and Dunreath Drive.
Tonkin highway over the river

Tonkin Highway will be transformed to deliver a high standard, north-south transport link from Muchea to Mundijong. 

The Tonkin Gap Project will address the current bottleneck where the highway reduces from three lanes to two lanes in Bayswater and Redcliffe, significantly reducing travel times and improving safety. We will also be making improvements to access and connectivity for road users, pedestrians and cyclists in the project area. 

The Associated Works will provide rail-enabling works for the METRONET Morley-Ellenbrook Line along Tonkin Highway, including underpasses and dive structures, to enable trains to enter and travel along the median of Tonkin Highway then exit in Malaga. Road and bus bridges will be built at Broun Avenue to provide access to the future Morley Station.

The upgrades are expected to save road users up to 6 minutes of travel time during morning peak and up to 11 minutes of travel time during afternoon peak. 

The preliminary concept includes: 

  • Widening Tonkin Highway to provide new lanes in each direction from Dunreath Drive to Collier Road, as well as new roads linking Guildford Road and Great Eastern Highway 
  • New bridges over the Swan River, Dunstone Road, Guildford Road, Railway Parade 
  • New fully grade-separated Principal Shared Path (PSP) on the western side of Tonkin Highway from north of Guildford Road interchange to approximately Stanton Road with local connections 
  • Noise walls  
  • Upgraded lighting and intelligent transport systems (ITS) infrastructure 


Alleviate pressure on the transport network

Reduce travel times

Improve safety and connectivity

Tonkin Gap - Map.jpg
Click image to enlarge (PDF)

You're Invited

Community Open House Event

See the latest designs and ask our team any questions on Wednesday 4 August between 3pm and 7pm. Visit us at the Bayswater Drill Hall at Cnr Murray and Crowther St, Bayswater WA 6053.

Subscribe to
project updates

Subscribe to our email list for the latest project updates and announcements.



Companies who wish to provide goods or services to Tonkin Gap will need to align with our commitments and complete a form below to be considered. A pre-qualification process may be requested following evaluation.

Page last reviewed:  | Last updated: 

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.

Tell us what you think

Help us improve our website by sharing your thoughts and suggestions.

Provide feedback