​Karel Avenue Upgrade

  • Upgrade Roe Highway and Karel Avenue interchange including widening Karel Avenue bridge
  • Construction commenced in July and is due for completion by late-2020
  • Reduce congestion, improve access and support development of the Jandakot Industrial Area


  • Widening Karel Avenue bridge over Roe Highway to create a dual carriageway, connecting at the two-lane dog-bone roundabouts for on and off-ramps
  • Extending Karel Avenue bridge across the freight railway line located immediately south of Roe Highway to facilitate construction of the Thornlie-Cockburn Link as part of METRONET
  • Extending the existing Karel Avenue underpass to accommodate the widening
  • Modifying the existing Training Place intersection to left in and left out to promote safe access
  • Widening of Karel Avenue between the Farrington Road intersection and Roe Highway to four lanes
  • Widening of Karel Avenue between Roe Highway and the Berrigan Drive roundabout to a four-lane dual carriageway, including modifications to the roundabout approaches to enable two lanes in each direction

Project Update

Detour for cyclists and pedestrians

  • Temporary closure of PSP north of Karel Avenue and Roe Highway bridge from late September 2019 to mid-2020
  • PSP users will be detoured via Karel Avenue northbound to Dimond Court and through to Fern Leaf Court, seedetour map

Detailed design and early works activities

The project's detailed design is well underway and includes a schedule for the construction program.  Activities the community may notice may include:

  • Removal of the Karel Avenue median to facilitate future traffic management diversions;
  • Clearing of vegetation across the project footprint;
  • Establishment of the construction site office near Berrigan Drive; and
  • Traffic management diversions and change of flow in traffic extending along Karel Avenue.

See the latest Project Update for more information.

Construction commencement

Early works have commenced to help improve safety and reduce congestion. A 70 per cent travel time saving is expected in peak hour traffic once the project is complete, compared to the 2017 (at project inception) and 2020 forecasted traffic data.

Read the Transport Minister's announcement for information


  • 30 November 2017: Call for expressions of interests from industry
  • 1 May 2018: Issue request for proposals to shortlisted applicants
  • May 2019: Contract award
  • July 2019 to late 2020: Construction



 Image: Karel Avenue Upgrade overview map



The $15 million project is funded by the State and Commonwealth Governments as part of a $2.3 billion package of road and rail infrastructure works.

Last Updated: 03 October 2019