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Stephenson Avenue Extension New road project

Innaloo, Osborne Park


  • Road

    Project type
  • $461.4 million More info

    Total budget
  • Under Construction

    Project phase
  • Main Roads WA

    Lead agency
  • 800

    Jobs supported
  • Late 2020

    Start date

    Late 2024

    End date

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.

Phase one of the project, which was delivered by the City of Stirling and opened in February 2022, included construction of a new road from Scarborough Beach Road to Sarich Court with connections to Ellen Stirling Boulevard at Howe and Oswald Streets.

Work on phase two is underway. The Main Roads WA project will provide a new connection from Scarborough Beach Road to Cedric Street, including an interchange with the Mitchell Freeway to replace the existing Cedric Street interchange, and local road links to Ellen Stirling Boulevard.

Main Roads WA will also deliver the Stirling Bus Interchange upgrade on behalf of the Public Transport Authority as part of phase two. The upgrade consists of increasing the capacity from an 18-stand bus station to a modern 30-stand bus interchange along with the construction of a new pedestrian access between Stirling Station and the southern car park.


  • A new traffic signalised intersection at Scarborough Beach Road
  • Ease traffic congestion
  • Provision of a safe route for people riding and walking in the area
  • Improved streetscaping in the area
  • Reduce travel time and improve accessibility to the Stirling City Centre
  • New shared paths along Stephenson Avenue

Project map

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