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Tonkin Gap Project Upgrades

Bayswater, Embleton, Redcliffe


  • Road

    Project type
  • $290 million

    Total budget
  • Under Construction

    Project phase
  • Main Roads WA

    Lead agency
  • 1050

    Jobs supported
  • Late 2020

    Start date

    Late 2023

    End date

Tonkin Highway is part of Perth’s Principal Road Freight Network that serves key activity centres such as Perth Airport and the Kewdale Freight Terminal.

This project will upgrade a section of the Tonkin Highway from Collier Road to Dunreath Drive with associated works enabling METRONET’s Morley-Ellenbrook Line.

Works as part of this project include:

  • additional traffic lanes in each direction between Collier Road and Dunreath Drive
  • new bridges over the Swan River, Guildford Road, Railway Parade and Dunstone Road
  • upgrades to the Guildford Road and Great Eastern Highway interchanges
  • a Principal Shared Path (PSP) with bridges, underpasses and local connections for cyclists and pedestrians
  • noise walls, lighting and amenity improvements

For the latest construction updates and works information, visit the Main Roads Western Australia page. 


  • Alleviate pressure on the existing transport network.
  • Improved road safety and reduce congestion for all road users.
  • Improved freight efficiency, connectivity and travel time.
  • Address a major bottleneck on Tonkin Highway through Bayswater which carries more than 120,000 vehicles daily

Project map

This map shows an aerial view of the project location.
Project work area

Detour options

  • Traffic changes: Benara Road between Della and Mahogany roads
    Traffic on Benara Road has been reduced to one lane in each direction and shifted to the southern half of Benara Road for underpass construction works. 
    Speed will be reduced to 40km/h while the northern half of the underpass is being built.
    Road users will not be able to turn right from Mahogany Drive until mid-2023. To travel westbound, there is a U-turn available on Benara Road just before the Beechboro Road North traffic lights.
    Further information is available at the Main Roads website

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