Mandurah Line Nightly Closures and Fremantle Bridge Detours Impact Wednesday Commutes

Commuter Alert: Wednesday, 11 March 2026

Perth commuters should prepare for significant disruptions across the rail network and major road arteries this Wednesday. With major infrastructure projects reaching critical milestones and nightly maintenance schedules in effect, planning ahead is essential to avoid delays during the morning and evening peaks.

Public Transport Updates

The most significant impact to public transport users today involves the Mandurah Line. Transperth has confirmed nightly closures between Cockburn Central and Mandurah stations starting tonight, Wednesday, 11 March. These closures are required for essential track maintenance and will affect late-night travelers. Replacement bus services (Route 909) will operate between the affected stations, but passengers should allow for at least 20 to 30 minutes of additional travel time.

• Mandurah Line: Nightly closures between Cockburn Central and Mandurah begin tonight.
• Stirling Station: Commuters are reminded that new bus stand assignments at Stirling Station came into effect earlier this week. Ensure you check the signage before heading to your usual platform.
• CAT Bus Services: Minor disruptions continue for the Red and Purple CAT services in the CBD due to ongoing urban improvement works. Some stops may be temporarily relocated or bypassed.
• Bus Routes 281, 350, 568, and 597: Additional services have been added to these routes to support increased demand following recent network changes.

Major Roadworks and Closures

On the roads, the long-term closure of the Fremantle Traffic Bridge remains the primary concern for those traveling between North Fremantle and the Fremantle CBD. Motorists are encouraged to use the Stirling Highway bridge as the primary detour route, though heavy congestion is expected during peak hours.

• Fremantle Traffic Bridge: The bridge remains closed for its 12-month replacement project. Follow all detour signage via Stirling Highway.
• Tonkin Highway Extension: Significant works continue in the south, with Thomas Road remaining closed between Kargotich Road and South Western Highway. Traffic is being diverted through local arterial links.
• South Perth: Expect minor delays near the intersection of Anstey and Angelo Streets as crews finalize the installation of a new pedestrian zebra crossing.
• City CBD: Telethon Avenue remains closed for ongoing development, affecting local access between the RAC Arena and the city center.

Commuter Tips for Today

To ensure a smooth journey, we recommend checking the Transperth app for real-time bus and train locations before leaving home. For motorists, avoid the Kwinana Freeway northbound merge at Canning Highway if possible, as recent traffic flow changes have led to increased bottlenecking during the 7:30 AM to 8:30 AM window. If you are traveling to the southern suburbs late tonight, remember that the final through-trains on the Mandurah Line will depart earlier than usual.