Skip to main content

Mandurah Line now open for passengers after 20-day shutdown to facilitate major works on the Thornlie-Cockburn Link.


Stephenson Avenue Extension New road project

Innaloo, Osborne Park


  • Road

    Project type
  • $255 million

    Total budget
  • Under Construction

    Project phase
  • Main Roads WA

    Lead agency
  • 800

    Jobs supported
  • Late 2020

    Start date

    Late 2023

    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 is currently being delivered by the City of Stirling and will include construction of a new road from Scarborough Beach Road to Sarich Court with connections to Ellen Stirling Boulevard at Howe and Oswald Streets. Completion of this phase is anticipated in September 2021.

Phase two will be delivered by Main Roads WA and extend Stephenson Avenue from Sarich Court to Mitchell Freeway and Cedric Street. The contract for this phase will be awarded mid-2021 with completion scheduled for late 2023.

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

This map shows an aerial view of the project location.

News and project updates

See all news
See all news

Plan your journey

Avoid disruptions to your journey and plan your trip