Preferred build consortium appointed for Perth freeway upgrades

Major upgrades to Perth’s Kwinana Freeway between Roe Highway and Safety Bay Road are a step closer, with the appointment of the preferred proponent to build the project.

The consortium comprised of CPB Contractors, McConnell Dowell Constructors, Arup Australia Projects, and Jacobs Group will now begin negotiations with Main Roads WA prior to the contract award.

The $700 million Kwinana Freeway Upgrade, jointly funded by the Federal and WA Governments, is set to ease congestion and improve safety across Perth’s southern suburbs.

New lanes will be added to key sections of the freeway, including a third lane in each direction for the 11-kilometre stretch between Russell Rd and Mortimer Rd.

“Widening the Kwinana Freeway will support Western Australians in the southern suburbs of Perth get to home, work, and school faster,” said Premier, Roger Cook.

A new southbound lane will be added between Roe Hwy and Berrigan Drive, as well as a new northbound lane from Russell Rd to Beeliar Dr.

New coordinated ramp signals on the northbound ramps between Safety Bay Rd and Roe Hwy will also help to smooth the flow of traffic on the freeway at busy times.

Median and verge barriers on both carriageways will be upgraded at key sections to protect road users and increase safety on the freeway.

“We’re proud to be delivering major upgrades to the Kwinana Freeway with a preferred proponent now appointed, putting us on track to start works next year,” said WA Deputy Premier and Minister for Transport, Rita Saffioti.

“By adding extra lanes, smart traffic management, and barrier upgrades, this project will improve road safety and help traffic flow more smoothly during peak periods.

“These upgrades will make a big difference to the daily lives of people commuting from our southern suburbs, as well as the growing number of people working in the commercial and industrial precincts between Perth and Rockingham.”

Detailed design will be undertaken in the second half of this year, with construction expected to begin early 2027 subject to environmental and heritage approvals.

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