​Marble Bar Road - Coongan Gorge Realignment

Jointly funded by the Australian and State Governments, the realignment of Marble Bar Road through Coongan Gorge will improve safety and efficiency for all road users travelling to the central Pilbara Region. Marble Bar Road provides access to a number of mining operations and local communities between Newman, Nullagine, Marble Bar and several aboriginal communities including Jigalong and Punmu. The four kilometre section of road through Coongan Gorge is currently a narrow winding section of road with steep descents, tight curves and restrictive sight distances.

As part of the WA Regional Freight Transport Network Plan this upgrade will significantly improve road safety and reduce transport vehicle operating costs and travel times. The contract to undertake these works was awarded to MACA Civil Pty Ltd and will also include the upgrade of the Marble Bar Road and Limestone-Marble Bar Road intersection.


Image: Construction area

Latest news

Construction has been underway since July, with a Welcome to Country held in early October involving Njamal traditional owners. Read more in the Project Update.

Marble Bar Road side tracks 

Side tracks on Marble Bar Road have been completed to maintain the flow of traffic through the works area. These are now open for road users.

Traffic impacts:

  • Two-way traffic in place on the side tracks with a speed limit of 60 km/h.
  • Roadworks from 6am to 5.30pm.
  • Vehicle width restrictions in place. See our Roadworks Update for more information.


Managing environmental impacts is of high importance to us and our contracting partner MACA Civil Pty Ltd. This will be undertaken in accordance with the project's Environmental Management Plan. Where possible, works are planned to ensure minimal impact.

Please see our Project Fact Sheet for further information.

Blasting activities

Intermittent blasting is required to take place between 12pm and 5pm (maximum of three blasts a day) until early December 2018. Traffic will be temporarily stopped for a maximum of 15 minutes during blasting activities. Traffic management will be in place. Please follow the reduced speed signs if travelling through the work area.

Upcoming blasting activities:

  • Thursday 22 November - 1.30pm

These dates and times are only tentative and subject to change.

See the Construction Update for more information.

Concreting works 

Culverts are being installed as part of the improvements to the Limestone-Marble Bar Road intersection.

See the Construction Update for more information.

Scope of works

Coongan Gorge Realignment

  • Realignment and upgrade of the four kilometre section of Marble Bar Road that passes through Coongan Gorge
  • Construction of culverts and off-road drainage
  • Installation of safety barriers, signs and pavement markings, guide posts and road reserve boundary fencing

Marble Bar Road and Limestone-Marble Bar Road Intersection

  • Right turn pocket on Limestone-Marble Bar Road eastbound carriageway
  • Acceleration lane on Marble Bar Road eastbound
  • Left turn pocket on Marble Bar Road westbound
  • Left turn pocket on Marble Bar Road northbound



 Image: Mable Bar Road map


​Key benefits

  • Improve road safety
  • Reduce travel times
  • Improve reliability
  • Reduce transport vehicle operating costs and travel times


​Key dates

  • Construction start - Mid 2018
  • Construction completion - Early 2019


​More information

Construction Update - November 2018

Project Update - October 2018

Roadworks Update - September 2018

Construction Reference Group Meeting Minutes - June 2018

Project Newsletter - December 2017


Last Updated: 21 November 2018