Princes Highway West - Winchelsea to Colac

Upgrading the Princes Highway from Winchelsea to Colac



37kmof upgrades

10,000new indigenous trees


The project will duplicate over 35 kilometres of highway and includes new intersections and safety improvements. It is being delivered in four sections:

  • Deans Marsh Road, Winchelsea to Armytage Road
  • Armytage Road to Warncoort
  • Warncoort to Colac East
  • Colac East and Colac.

Some key improvements include:

  • Twenty new intersections
  • Flexible safety barriers on the edge of the road and in the median
  • Landscaping, including planting of more than 10,000 local indigenous trees
  • Designated left and right turn lanes off the highway
  • New bridges over the rail line at two locations
  • Upgraded drainage.

Major Road Projects Authority is working with contractors BMD and Decmil to complete the first two sections of the duplication.

Construction began in 2016. Sections of the upgrade will be completed through 2018 and 2019.

Latest disruptions

Adding an extra lane in each direction will reduce crashes and make travel times more consistent


The Princes Highway West Duplication is being delivered by Major Road Projects Victoria. Visit the project website for more information.

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