Stephenson Avenue Extension New road project

The Stephenson Avenue extension will provide a new link between Scarborough Beach Road and Mitchell Freeway, joining the existing Stephenson Avenue from Jon Sanders Drive and Scarborough Beach Road to the State’s freeway network.

The project will provide 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. View the Main Roads WA map of project works here.

The new southbound on-ramp to the Mitchell Freeway from Cedric Street opened on Monday 14 October 2024. This runs along the alignment of the future Stephenson Avenue and will improve congestion and connectivity for people travelling in Perth's modern suburbs. The new on-ramp forms part of the Smart Freeway, which will be modified with co-ordinated signals. 

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Works on the project include the below.

Phase one of the project was delivered by the City of Stirling and opened in February 2022. This included construction of a new road from Scarborough Beach Road to Howe Street.

Phase two is underway and the project is now over 47 per cent complete. Stephenson Avenue will be extended from Howe Street to Mitchell Freeway and Cedric Street interchange. A number of new road and shared path works are under construction.

The Stephenson Avenue Interchange Bridge and the Stirling Station Bus Interchange Bridge are being incrementally ‘launched’ (pushed out) over live traffic on the Mitchell Freeway. These two bridges total 30 segments, measuring 660 metres in length.

Main Roads WA will deliver the Stirling Bus Interchange upgrade on behalf of the Public Transport Authority. This will increase capacity from an 18-stand bus station to a modern 30-stand bus interchange, with a new pedestrian access between Stirling Station and the southern car park.

Find more information on the Main Roads WA project here.