Stephenson Avenue Extension

Under constructionUnder Construction

Providing a new connection from Cedric Street to Scarborough Beach Road, including an interchange at Mitchell Freeway with a southbound Smart Freeway on-ramp, as well as new local road links to Ellen Stirling Boulevard.

Aerial view of Mitchell Freeway near Cedric Street

What's happening

Nightly closures on Mitchell Freeway southbound - 24 March to 27 March 2025

We will be upgrading the Stirling Station bus interchange to provide a safe connection for public transport passengers with a new, enclosed, 36-metre-long pedestrian access bridge.

In January, the bridge structure, comprising two 18-metre-long steel trusses, was successfully installed during a weekend closure of Mitchell Freeway southbound. The next phase of bridge construction is the installation of the bridge’s 36-metre-long Colorbond roof and associated infrastructure. 

To safely complete these works, nightly closures of Mitchell Freeway southbound between the Cedric Street off-ramp and Stephenson Avenue on-ramp are required.

Traffic impacts: 

Monday 24 March to Thursday 27 March 2025, 9pm to 4am the following day

  • Mitchell Freeway southbound between Cedric Street southbound off-ramp and Stephenson Avenue southbound on-ramp.
  • Road users travelling southbound will be detoured via the Mitchell Freeway southbound on-ramp to Stephenson Avenue.


Train services nightly disruptions – Monday 24 March to Thursday 27 March 2025

  • Train services on the Yanchep Line will be disrupted nightly between Perth and Whitfords stations from Monday 24 March to Thursday 27 March. Full line services will resume from the start of timetabled services each morning.
  • Train replacement buses will run from Perth to Whitfords.
  • There will be some disruptions to Stirling Station bus stands 1, 2 and 3, impacting routes 414, 423, 415 and 998.
  • Visit www.transperth.wa.gov.au to plan your journey.  

Following the installation of the bridge’s roof and associated infrastructure, ongoing works will continue including tiling, ceiling, services and fixtures installations and electrical works to complete the bridge. 

All works are subject to favourable weather conditions and workforce availability.

Improve

traffic flow

Better

connectivity

Increase

capacity

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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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