Major Rail Disruptions and Mount Ousley Traffic Shifts: Saturday Commute Update

Weekend Travel Overview for Wollongong

Commuters and weekend travelers in the Illawarra should prepare for significant disruptions this Saturday, April 4, 2026. A combination of major scheduled rail maintenance and ongoing construction at the Mount Ousley Interchange will impact travel times between Wollongong and Sydney, as well as local movements around the city's northern gateway.

South Coast Line: Buses Replace Trains

The most significant impact for commuters today is the extensive trackwork scheduled for the South Coast Line. Transport for NSW has confirmed that for Saturday morning, buses will replace trains between Sutherland, Dapto, and Port Kembla. This maintenance work is part of essential upgrades to ensure the long-term reliability of the network.

• Replacement Services: High-frequency buses will operate between major hubs, but passengers are advised that travel times may increase by up to 45 minutes depending on the destination.
• Sydney Travel: Those heading to Sydney for the Royal Easter Show or other weekend events will need to transfer from buses to trains at Sutherland.
• Southbound Services: Trains will continue to operate between Bomaderry, Kiama, and Dapto, though some services may run to a modified timetable.

Mount Ousley Interchange Project: New Traffic Conditions

On the roads, the $405 million Mount Ousley Interchange project has reached a critical milestone that motorists need to be aware of. As of April 2, the first of two new heavy vehicle safety ramps is now officially open to traffic. This new ramp is located approximately 330 meters north of the old southern safety ramp.

Drivers should take note that the old southern-most safety ramp is now permanently closed to allow for the next phase of bridge construction. While the motorway remains open, motorists are urged to follow new line markings and signage at the base of Mount Ousley. Construction crews remain active in the corridor, and while no full daytime closures are scheduled for today, a reduced speed limit of 80km/h remains in effect through the work zone for the safety of both workers and drivers.

Advice for Commuters

With the Sydney Royal Easter Show now in full swing, traffic on the M1 Princes Motorway heading north is expected to be heavier than usual throughout the day. If you are planning a trip to Sydney, consider leaving earlier than planned to account for both the increased motorway volume and the rail-to-bus transfers at Sutherland. For local travel, allow extra time when navigating the university precinct and the base of Mount Ousley as drivers adjust to the newly opened infrastructure.