M5 Motorway Traffic Update: Westbound Upgrade Works Continue Near Moorebank and Casula
Motorists travelling along Sydney’s M5 Motorway are experiencing changing traffic conditions on Monday, September 28, 2026, as major infrastructure works continue along the M5 Westbound Upgrade corridor between Moorebank Avenue and the Hume Highway.
There was no independently verified report of a major M5 crash associated with the current disruption at the time of reporting. Motorists should therefore not assume that delays or altered traffic conditions are the result of an accident.
The ongoing changes are connected to the major M5 Westbound Upgrade, which is being delivered to improve traffic flow, connectivity and safety across the busy south-west Sydney corridor. Transport for NSW says the project covers the westbound M5 between Moorebank Avenue, Moorebank, and the Hume Highway, Casula.
M5 Upgrade Works Affect Traffic Conditions
The project involves substantial changes to the motorway network, meaning motorists can encounter temporary lane arrangements, changed access points and construction activity while travelling through the Moorebank and Casula areas.
One of the major components is a new three-lane bridge over the Georges River and the Southern Sydney Freight Line, along with changes intended to improve connections between the M5 Motorway, Moorebank Avenue and the Hume Highway.
The upgrade is also designed to address the existing traffic-weaving arrangements between Moorebank Avenue and the Hume Highway. Transport for NSW says the works will provide additional lanes and improve the movement of vehicles entering and exiting the motorway.
Another objective is to improve access to the Moorebank Intermodal Terminal and provide better connections for pedestrians and cyclists across the corridor.
Motorists Urged to Allow Extra Travel Time
With construction taking place along an important transport route in south-west Sydney, motorists may experience delays or changing conditions as traffic management arrangements are introduced and modified.
Transport for NSW has said construction will be staged to minimise disruption to transport customers and the surrounding community. The project documentation also notes that construction involves multiple work areas operating in stages.
Motorists travelling toward Liverpool, Casula, Moorebank and the Hume Highway are encouraged to allow additional travel time and follow temporary signs and directions in construction areas.
For the latest information about incidents, closures and changes affecting NSW roads, motorists can check Live Traffic NSW, which provides real-time information about road incidents and changing traffic conditions.
No Confirmed Major Crash Linked to Current Disruption
At the time of this report, the available information did not independently confirm a major crash as the cause of the M5 disruption.
That distinction is important because traffic congestion around Moorebank and Casula can be caused by planned construction activity, temporary lane arrangements and changes to motorway access.
The M5 Westbound Upgrade itself is a long-term infrastructure project intended to improve traffic flow and safety between Moorebank Avenue and the Hume Highway. Construction activity is expected to continue as the project progresses.
Motorists should remain alert, obey temporary speed limits and traffic-control directions, and exercise caution when approaching work zones.
Further updates may be issued if Transport for NSW, NSW Police or Live Traffic NSW reports a separate crash or other incident affecting the M5 corridor.
