THE troubled Onslow Iron haul road has been temporarily closed following the sixth truck rollover on the $2.6 billion road.
A notice to the Australian Stock Exchange said the road would be closed while Mineral Resources engaged with WorkSafe WA about controls and risk-mitigation of the road train operations.
MinRes reported to WorkSafe WA that the rear two trailers of a road train had tipped onto their side on the haul road on 17 March 2025.
The prime mover and first trailer remained upright, and the operator was not injured.
The cause of the incident is under internal investigation.
Haulage is continuing via contractor vehicles using alternative routes, and MinRes transhippers will continue to load ocean-going vessels during this period.
The road is jointly owned by MinRes and Margan Stanley Infrastructure Partners who bought a 49% interest for $1.3 billion in September last year.
Road conditions deteriorated after cyclone Zelia swept across the Pilbara with MinRes spending $230 million in repairs. The notice to the ASX said MinRes had strengthened controls and traffic management on the haul road and currently expects to resume haul road operations without impacting FY25 Onslow Iron volume guidance.
