Monash Freeway Upgrade

The Monash Freeway Upgrade will improve safety and reliability along the 44 kilometres between Chadstone and Pakenham, extending what is already Australia's longest stretch of managed motorway.

The upgrade is part of the $5.5 billion Western Distributor Project and includes 30 kilometres of extra traffic lanes along with major improvements to the managed motorway system.

Key features include:

  • Widening the freeway from four to five lanes each way between the EastLink interchange and South Gippsland Freeway
  • Widening the freeway from two to three lanes each way between the South Gippsland Freeway and Clyde Road in Berwick
  • Ramp signals added from Chadstone to Pakenham, to help prevent stop-start driving conditions and dangerous sudden braking
  • Lane Use Management Signs (LUMS) installed between Warrigal Road and the South Gippsland Freeway to improve traffic flow by providing drivers with information in the event of an incident. Automatic Incident Detection will work alongside LUMS to provide real time alerts to the traffic control centre, further improving the effectiveness of the freeway during an incident.

These improvements mean the M1 will be a managed motorway from Duncans Road in Werribee to Koo Wee Rup Road in Pakenham around 90 kilometres connecting Melbourne's east and west.

This video provides an overview of the project and its benefits.

Monash Freeway Upgrade video transcript
Monash Freeway Upgrade MapMonash Freeway Upgrade Map (PDF 195.32 KB)PDF icon


The Monash Freeway Upgrade will relieve congestion and support jobs growth in Melbourne's south east. Key benefits include:

  • More reliable travel times for 200,000 daily motorists 
  • Room for an extra 2,000 vehicles per hour during the peak
  • Peak hour capacity on the Hallam Bypass will grow by 50 per cent
  • Capacity for 20 per cent more vehicles on the busiest section of the freeway, from EastLink to the South Gippsland Freeway
  • Reduced travel times by 10 minutes a day
  • A 20 per cent reduction in crashes that cause serious injury
  • Overall economic benefit to the state of around $100 million a year
  • Up to $30 million a year in savings on freight costs 
  • Stronger links between key employment and education precincts along the M1 corridor
  • Up to 5,600 jobs as part of the overall Western Distributor Project.

Project status

Contracts have been awarded for the design and construction phase of the Monash Freeway Upgrade, and you can read the media release for more information on the announcement.

Work will begin in late September, with completion scheduled for 2018. Construction on the Western Distributor starts in late 2017 and the full project will be finished by 2022.

Contact us

For more information about the project please contact:


Call 1800 817 687

interpreterFor languages other than English, please call 1800 817 687.

Media and publications

Page last reviewed on 24 June 2016

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