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South Coast Highway Road safety improvements

Bluff Creek, Green Range, South Stirling


  • Road

    Project type
  • $30 million

    Total budget
  • Under Construction

    Project phase
  • Main Roads WA

    Lead agency
  • 230

    Jobs supported
  • Late 2020

    Start date

    Late 2021

    End date

A three-year, staged program of safety improvements, to address road width and geometry issues, is underway on South Coast Highway.

Mead Road Passing Lane was completed in June 2019 and included construction of a westbound passing lane between Killarney Road and Monty’s Leap Winery, along with widening works and a two metre sealed shoulder in each direction.

Work on the Kalgan section, which included widening the existing pavement from seven metres to 11 metres from Monty’s Leap Winery to the Kalgan River Bridge, was completed in April 2020.

The third and final stage of this safety improvement program, which is currently underway, includes reconstruction and widening of the highway, and construction of two passing lanes between Bluff Creek and Kojaneerup West Road.

Once completed the project will provide safer travelling opportunities and improved transport efficiencies.


  • A wider, safer road with improved sight lines
  • Additional passing opportunities
  • Potentially reduced travel times
  • Sealed shoulders

Project map

This map shows an aerial view of the project location.
Project work area

Detour options

  • South Coast Highway Closed

    South Coast Highway between Kojaneerup West Road and Cheynes Beach Road is closed in both directions from 4 January to May 2021 (24 hour works).

    This closure is for your safety and the safety of road workers. It will reduce the construction period and traffic disruptions. Local access only.

    Please see the map for details.

Plan your journey

Avoid disruptions to your journey and plan your trip