Mitchell Freeway Southbound Widening - Cedric Street to Vincent Street

Mitchell Freeway carries some of the highest traffic demands in Perth, with up to 180,000 vehicles per day, and is a critical corridor connecting Perth’s northern suburbs to commercial, residential and recreational facilities in the wider metropolitan area.

The section of freeway from Cedric Street to Vincent Street is particularly congested in the morning peak, with bottlenecks at two separate locations where four lanes merge into three.

As part of a $2.3 billion investment in road and rail infrastructure, the State and Australian governments have committed $40 million to widen Mitchell Freeway between Cedric Street and Vincent Street, providing 7 kilometres of additional lane in the southbound direction to improve congestion through the area.

This work forms part of our overall plan to transform Perth’s freeways to accommodate population and economic growth into the future.

We value your feedback on how we are communicating with the community and invite you to complete a quick online survey.

Latest News

Construction Update

The first stage of the project has commenced to widen the freeway and construct the PSP and noise walls.

The latest Construction Update includes information on vegetation removal, landscaping and noise walls.

Shared Path Detours

A series of Principal Shared Path (PSP) detours are required to allow for the construction of cycling underpasses. The project scope includes a new PSP from Glendalough Station to Hutton Street, with two underpasses at Hutton Street and a bridge over Scarborough Beach Road.

The first detour will be in place from 25 February to October 2019, and will extend from Telford Crescent to Hutton Street in Stirling. More information and a detour map is available in our fact sheet.

Changes to traffic conditions

From Friday 18 January until the end of 2019, a temporary southbound lane alignment will be in place between Karrinyup Road and Vincent Street. This will allow widening works to be undertaken.

Construction Reference Group

A Construction Reference Group has been formed, with the third meeting held in November 2018. The group has been formed to ensure adjacent communities have input into the project’s detailed design.

Scope of works

  • Build an additional 7 km lane on Mitchell Freeway southbound from Cedric Street to Vincent Street
  • Complete the missing link on the Principal Shared Path from Glendalough Station to Hutton Street
  • Improve median barriers between the railway line and traffic lanes with existing barriers being replaced with concrete barriers
  • Provision of noise and screen walls where required

Environment and community

We are committed to ensure early and ongoing communication is undertaken throughout the project to ensure you stay up-to-date. As the project develops from concept to detail design, more information will be available for our stakeholders.

While there will be some impacts during construction, we will plan to minimise disruption and inconvenience to road users and nearby residents as much as possible.

We invite you to complete a short online survey to provide feedback on how the project has been communicated.




Image: Mitchell Freeway southbound widening map from our project update


​Key benefits

  • Provide capacity for additional vehicles on the freeway 
  • Improve traffic flow and journey times for road users, particularly during their morning commute
  • Improve safety by reducing stop/start conditions from lane merging
  • Create four continuous freeway lanes from Erindale Road to Vincent Street


​Key dates

  • Issue Expressions of Interest: July 2017
  • Issue Request for Proposals to shortlisted applicants: October 2017
  • Contract award: June 2018
  • Construction: Mid-2018 to end-2019


​More information

Construction Update - January 2019

Roadworks Update - January 2019

Construction Update - October 2018

Project Update - May 2018

Project Update - August 2017

Fact Sheet - May 2017

CRG Minutes:

Information sheets:

Media statements:

Overhaul of Mitchell and Kwinana freeways begins - 14 October 2018

Tenderers shortlisted to deliver a free flowing Mitchell Freeway - 30 October 2017

Last Updated: 15 February 2019