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This assessment brief outlines the Western Australian Government's proposal to widen a section of the North West Coastal Highway in the Pilbara region of Western Australia. The project will improve the efficiency and safety of freight and other vehicles on the highway by widening the sealed section and creating improved flood immunity to support the operation of wide and heavy vehicles. The Western Australian Government is seeking $143.2 million in Commonwealth funding for the project.

This assessment brief outlines the Western Australian Government's proposal to build approximately 1.8 kilometres of dual carriageway and undertake a major intersection reconfiguration along the Leach Highway (High Street) in East Fremantle between Carrington Street and the Stirling Highway. The upgrade will reduce delays for freight vehicles, improve road capacity and improve network amenity along a section of urban arterial road. The Western Australian Government is seeking $57.2 million in Commonwealth funding for the project.

In 2013, Infrastructure Australia assessed the North West Coastal Highway – Minilya to Barradale initiative as ‘Threshold’.

In 2013, Infrastructure Australia assessed the Leach Highway Fremantle Upgrade initiative as ‘Threshold’.

In 2013, Infrastructure Australia positively assessed the Great Northern Highway – Muchea to Wubin Stage 2 project as ‘Threshold’ on the Infrastructure Priority List.