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

In December 2025, the new Stephenson Avenue bridge opened to traffic, along with new northbound and southbound on-ramps. At the same time, Cedric Street westbound was closed temporarily between Stephenson Avenue and Ellen Stirling Boulevard to progress tie-in works along Cedric Street.

Traffic changes along Cedric Street are anticipated to continue to progress in stages until mid-2026 to allow works to continue safely. Ongoing works include retaining wall and shared path construction, a new signalised intersection for bus connections to the new Stirling bus bridge and ongoing tie-in works.

Upcoming traffic changes

From Friday morning 27 February, Cedric Street eastbound traffic will be temporarily shifted between Ellen Stirling Boulevard and the Cedric Street northbound on-ramp.

Motorists intending to access Mitchell Freeway northbound from Cedric Street eastbound should position themselves in the left lane earlier to access the on-ramp.

Access to the Stirling Station northern and southern car parks, (including ACROD parking, drop off and pick up bays, and short-term parking) will remain the same.

The footpath on the northern side of Cedric Street between Ellen Stirling Boulevard and the Cedric Street northbound on-ramp will be temporarily closed to progress construction works. During this time, pedestrians will be safely diverted to the southern side of the footpath. There will be wayfinding signage in place to guide pedestrians.

These changes are anticipated to be in place until mid-March 2026. More information on the next stage of changes will be provided closer to the time.

View image below showing Cedric Street eastbound traffic shift.

Stephenson Avenue Extension - Cedric Street eastbound traffic shift map
Click image to enlarge

Prior to the traffic shift, we will be required to complete minor modification works to the Mitchell Freeway / Cedric Street interchange including median removal, asphalting and line-marking. These preparatory works will require off-peak closures to allow works to be completed safely. View roadworks section for more information on these closures.

Staged changes continuing into 2026

  • The final Stephenson Avenue northbound on-ramp is anticipated to open from mid-April, which means the Stephenson Avenue interchange becomes fully operational.
  • Coinciding with the opening of the final ramp, a temporary full closure of Cedric Street between Ellen Stirling Boulevard and Stephenson Avenue and the Cedric Street northbound on ramp will be implemented to complete finishing works. Buses will continue retain access along Cedric Street.
  • Access to Stirling Station and associated car parks will continue to be maintained, however there may be changes to how public transport users can access these facilities as works progress.

More detailed communications will be provided in the lead up to these changes coming into effect.

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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