Onslow Road Upgrade

  • 76km of the Onslow Road will be upgraded, over two stages.
  • Stage 1 is underway and due to finish in April. Stage 2 is expected to commence in May.
  • Works will reduce travel times and improve safety in the Pilbara.


Image: Aggregate being stored for use in the upgrade works


Stage 1 is a 33 km stretch on the south east end which includes the upgrade of the North West Coastal Highway and Onslow Road intersection.

Stage 2 is 43 km long, and includes provision of a new intersection for the proposed Onslow controlled waste facility.

Works will include structural overlay and resealing, targeted sub-base and sub-grade improvements, replacement and extension of existing culverts and upgrade to signage and road markings.

Project update

During construction of Stage 1, Onslow Road and North West Coastal Highway will remain open. However, motorists may experience delays due to lane closures. Plan your trip and visit our Travel Map.
Stage 2 tenders closed on Wednesday 27 February.


The project is privately funded by Chevron Australia Pty Ltd and managed by Main Roads.



Construction start:

  • Stage 1: August 2018
  • Stage 2: May 2019

Anticipated completion:

  • Stage 1: April 2019
  • Stage 2: December 2019



  • Improved safety
  • Improved traffic efficiency
  • Reduced maintenance requirements
Last Updated: 05 March 2019