M12 Motorway Opening Approaches; Delays Expected on Canterbury Road and Princes Highway

Morning Commute Overview

Thursday, March 12, 2026, brings a mix of significant infrastructure milestones and the usual weekday challenges for Sydney commuters. While most major arteries are currently flowing well during the early morning hours, several long-term projects are entering critical phases this week. Commuters are advised to stay alert to changed traffic conditions in the West and South, while those using the northern corridor should prepare for ongoing upgrades and minor diversions near the city fringe.

Western Sydney: M12 Motorway Countdown

The most significant news for Western Sydney is the imminent opening of the $2.1 billion M12 Motorway. Although the road is not scheduled to officially open to the public until the early hours of Saturday, March 14, motorists should expect increased activity today as crews conduct final tests on signage, lane markings, and electronic driver guidance systems. Testing is concentrated on the 16-kilometre stretch between Elizabeth Drive and The Northern Road. While this work is largely off-road, support vehicles and site access requirements may cause minor, intermittent delays near construction entry points at Cecil Hills and Luddenham. This project will eventually provide a toll-free link to the new Western Sydney International Airport precinct.

Roadwork Alerts and Traffic Hotspots

Several scheduled roadworks are in place today that may impact travel times across the metropolitan area:

• Lakemba: A major intersection upgrade is underway on Canterbury Road between Victory Street and Legge Street. This work involves temporary lane closures and reduced speed limits. Expect heavy congestion and merging delays during the morning and afternoon peaks.
• Blakehurst: Essential line marking continues on the Princes Highway between Carwar Avenue and King Georges Road. Motorists are urged to follow the directions of traffic controllers and allow for extra travel time through the Kogarah and Blakehurst areas.
• North Sydney & Cammeray: As part of the ongoing Warringah Freeway Upgrade, crews are active in North Sydney, Neutral Bay, and Cammeray. While full freeway lane closures are reserved for the upcoming weekend, daytime work involving utility adjustments and barrier placements near the Miller Street bridge may cause slow-moving traffic for those heading toward the Sydney Harbour Bridge.

Public Transport and Metro Updates

On the rail network, Sydney Metro services on the M1 line are currently running to their standard weekday frequency, providing a train every four minutes during peak periods. However, passengers should be aware that significant weekend closures are planned for the M1 line starting tomorrow night, Friday, March 13, to facilitate critical testing for the Southwest extension to Bankstown. For regional travelers, coaches continue to replace select services on the North Coast and Southern lines. While the Sydney to Brisbane service remains operational by rail today, commuters planning travel for tomorrow should prepare for coach replacements starting at Casino.

Commuter Tip

With the M12 opening just 48 hours away, motorists in the Western Sydney Aerotropolis precinct should begin familiarising themselves with new interchange layouts around Cecil Park to avoid confusion once the new link goes live this weekend.