What's happening
The Stephenson Avenue Extension is now open, providing a new connection between Cedric Street and Scarborough Beach Road. Stage One includes:
- Opening of the new bridge over Mitchell Freeway and the Yanchep Line.
- New northbound off-ramp and southbound off-ramp.
- Permanent closure of the Cedric Street northbound off-ramp.
- Upgraded access to IKEA, Sarich Court, Catspaw Road, and surrounding businesses.
- Temporary closure of Cedric Street westbound between Stephenson Avenue and Ellen Stirling Boulevard.
- A section of the Stirling Station southern car park will reopen to Transperth passengers. Further information is available in the Stirling Bus Interchange section.
Finishing works will continue into 2026 to complete the interchange and shared path connections.
Cedric Street westbound closure detour map
Staged changes continuing into 2026
Large road upgrades open in stages so the community can benefit from key connections earlier. Once the new alignment opens to traffic, workers are then able to safely access different areas of the project to complete finishing works such as drainage, pavement works, signalised intersection tie-ins, shared paths and retaining walls.
These final works will continue into the first half of 2026, with several planned traffic changes needed to complete the project safely, including:
- The continued temporary closure of Cedric Street westbound between Stephenson Avenue and Ellen Stirling Boulevard.
- A temporary closure of the Cedric Street northbound on-ramp planned from early 2026 with alternative access to freeway northbound in place until March.
- The full opening of Catspaw Road to Cedric Street.
- New shared path connections and Principal Shared Path infrastructure opening in stages in 2026, coinciding with the phased openings of the network.
- Works on the Stirling Bus Interchange will also continue in 2026.
More detailed communications will be provided in the lead up to these changes coming into effect.
Check out our Fact Sheet, and Frequently Asked Questions for more information.
traffic flow
connectivity
capacity