Lane Closures on Mount Ousley and T4 Rail Disruptions: Tuesday Traffic Report

Morning Overview for Wollongong Commuters

Commuters across the Illawarra can expect a relatively clear run during the peak morning hours this Tuesday, March 31, 2026. While major arterial roads like the M1 Princes Motorway and Memorial Drive are currently flowing well, several localized council projects and scheduled rail maintenance for the T4 Illawarra Line will require forward planning for those heading north toward Sydney or moving through the northern suburbs.

M1 Princes Motorway and Mount Ousley Interchange

The Mount Ousley interchange project continues its intensive construction phase. While a full road closure is not scheduled for tonight (the next full closure is set for Wednesday, April 1), motorists should prepare for standard night-shift operations beginning at 7:00 pm this evening. These works are expected to conclude by 6:00 am on Wednesday morning.

• Lane Restrictions: Expect lane closures and a reduced speed limit of 40 km/h or 60 km/h between the base of Mount Ousley and the University of Wollongong.
• Safety Ramp Milestone: Heavy vehicle drivers should note that the current southern-most safety ramp is entering its final days of operation. The new heavy vehicle safety ramp is scheduled to open this Thursday morning.

Public Transport: Sydney-Bound Disruptions

For those utilizing the South Coast Line to travel into the Sydney CBD, significant trackwork is affecting the T4 Illawarra Line today. While trains are running between Wollongong and Sutherland, buses have replaced trains between Cronulla, Sutherland, and Hurstville. Commuters are advised to allow at least 30 to 45 minutes of additional travel time if transferring to replacement bus services to complete their journey to the city.

Local Roadworks and Suburb Alerts

Wollongong City Council has several active maintenance sites scheduled for today. Motorists should be aware of potential delays and changed traffic conditions in the following areas:

• Fairy Meadow: Roadworks are active along the Princes Highway and Fairy Avenue. Expect localized congestion near the retail precinct.
• Austinmer: Flood and stormwater infrastructure work continues on Railway Avenue.
• Warrawong: Upgrades to footpaths and shared paths are underway on Cowper Street, Stuart Road, and Northcliffe Drive.
• Figtree: Paving and maintenance work is scheduled for Whelan Avenue throughout the day.
• Mount Pleasant: Drainage works on Brokers Road may result in temporary lane narrowing.

Drivers are encouraged to maintain a safe distance from work crews and follow all posted signage and traffic controller directions to ensure community safety.