Smart Freeway - Kwinana Northbound

We are delivering Perth’s first Smart Freeway and creating an additional lane from Canning Highway to Narrows Bridge. Smart technology will be used to open and close traffic lanes in the event of an incident and adjust speed limits to get more through traffic during busy periods.

A Smart Freeway is the best solution for this constrained area where the railway and the Swan River prevent traditional widening. It will provide motorists with greater journey reliability, saving time, reducing costs and enhancing safety.

Smart Freeways are used successfully around the world to manage congestion, improve safety and get the most out of existing infrastructure.


 Video: Smart Freeway Kwinana Northbound

Latest News

Construction activities underway from 7 January

The next major change will be the installation of temporary barriers in stages along the edge line of the slow lane between Canning Highway and Narrows Bridge and the associated closure of the freeway’s northbound emergency lane, from Sunday 13 January.

From January to May, there will also be night works in this section from 8pm to 5am. A single northbound lane closure may be implemented from 8pm and 5am and a double lane closure from 10pm, along with a reduced speed limit of 60 km/h. During the day, the speed limit will be lifted to 80 km/h and all lanes will be open to traffic.

From February to July, further night works are planned between Farrington Road and Canning Highway. The northbound emergency and left lanes may also be unavailable from 8pm to 5am and speed reductions may apply.

A temporary closure of the shared path between Cale Street and Narrows Bridge is also required to facilitate project works. Once dates and detour routes are confirmed, they will be advertised on this page and distributed via local cycling networks, so please check back for future updates.

This project is being delivered by SmartWays Alliance, which includes Main Roads, BMD Constructions, Ventia, and Arup.

Scope of works

  • All Lane Running: creation of an additional lane by transitioning the emergency stopping lane for use by general traffic between Canning Highway and Narrows Bridge.
  • Lane Use Management System: safely enabling all lane running by implementing a smart system to close and reopen traffic lanes, adjust speed limits and provide emergency access during incidents, similar to the system used in the Northbridge Tunnel. 
  • Variable speed limits: are used to improve traffic flow by adjusting the speed limits based on traffic volumes and conditions. 
  • Emergency stopping bays: will be provided at regular intervals for vehicles to use in case of breakdown or incident.
  • Coordinated Ramp Signals: will be installed at on-ramps to help balance the flow of traffic onto the freeway and improve merging at Farrington Road, South Street, Leach Highway and Cranford Avenue.
  • Comprehensive CCTV coverage: will be linked to our central Road Network Operations Centre.
  • Driver information: will be better facilitated through electronic message signs on the freeway informing motorists of traffic conditions ahead in real-time.






  • Increase road capacity by 33 per cent
  • Adjust speed limits based on traffic demands in congested periods
  • Move more vehicles than ever before as well as reducing stop-start conditions by managing the flow of traffic
  • Improved journey times on Kwinana Freeway as far south as Roe Highway


​Key dates

Design and early site investigations: Mid to late 2018

Construction: Early 2019 to late 2019

Commissioning and operation: Early 2020

Last Updated: 16 January 2019