Collie to Mumballup Road Upgrade

  • Upgrade Collie Mumballup Road between Greer Road and Donnybrook-Boyup Brook Road
  • Works will be undertaken in a series of stages, with construction for Stage 1 underway
  • Increase the seal width to improve safety


The upgrade will increase the road width from the existing six-metre seal to ten metres, by installing one to two-metre wide sealed shoulders on each side of the existing road. As the terrain along this road undulates in some areas, further design investigation will be undertaken to address some land, services and minor alignment improvements along the road.

Where possible, safety will be enhanced by protecting or eliminating roadside hazards, such as large trees and steep embankments.

Project update

The first stage of works commenced south of Greer Road in late March and is expected to be completed in May.

Throughout construction, our focus will be on minimising environmental impacts as far as possible.

As part of the initial design development process associated with these upgrades, we sought to establish a Community Reference Group (CRG) to engage with the community in seeking feedback from stakeholders.

Image: Collie to Mumballup map


• Improve safety


  • Late March 2019: Stage 1 construction commenced
  • May 2019: Stage 1 construction ends
  • Additional stages will be planned in consecutive financial years.

​Find out more


Last Updated: 12 April 2019