​​​​​​​​​​Karel Avenue Upgrade

  • Upgrade Roe Highway and Karel Avenue interchange including widening Karel Avenue bridge
  • Construction commenced in July 2019 and is due for completion by late-2020
  • Reduce congestion, improve access and support development of the Jandakot Industrial Area


Image: Karel Avenue with construction workers and equipment. Motorists driving on


  • 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 - Visit the METRONET website  for more information.
  • 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

Construction update

Upgrade works are progressing well at the interchange:

  • Traffic is now on the recently widened lanes on the eastern side of Karel Avenue, while the new northbound Karel Avenue lanes and shared path are being constructed. 
  • A temporary roundabout is in place at Berrigan Drive to enable the remaining eastern side of the intersection, including the shared path, to be completed.
  • Extensions are underway to the northern and southern bridge abutments at the Karel Avenue bridge over Roe Highway.
  • Widening and re-asphalting the Roe Highway westbound off-ramp, and Roe Highway eastbound on-ramp.

Read more in the April 2020 Construction Update.

Upcoming after hours work

After-hours works will be required intermittently in May between 7pm and 7am. Construction activities include re-asphalting sections of Karel Avenue. These works and vehicle movements will likely be noticeable to nearby residents and equipment will operate intermittently to help minimise noise levels.

Key dates:

Thursday 15 May, 7pm to 5am - Karel Avenue between Farrington Road and Roe Highway

  • Re-asphalting the Karel Avenue northbound carriageway from north of Dimond Court to Roe Highway (see map below)

Tuesday 19 May, 7pm to 5am - Karel Avenue over Roe Highway and Roe Highway median works

  • Karel Avenue bridge over Roe Highway - Digger and on-foot personnel to remove existing parapets. 
  • Roe Highway median: removal of Western Power street-light.

Please note these are projected timeframes and are subject to change due to weather and/or other factors.

Read more in the Roadworks Update document.

​Pedestrian and cyclist detours

The Principal Shared Path (PSP) detour route changed from Wednesday 13 May. This will enable the widening of Roe Highway to Karel Avenue eastbound off-ramp and to upgrade of the adjacent PSP. View the PSP update for more details including a detour map.


Roe Highway near Karel Avenue

  • Lane closures and speed reductions on 19 May from 7pm to 5am

Karel Avenue from Farrington Road to Berrigan Drive

  • Reduced lane widths with one lane in both directions, speed limit reduced to 40 km/h ongoing until project completion
  • Open Roadworks update document


  • 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, with legend



The $28.7 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: 15 May 2020