Northlink WA southern section


This project upgraded Tonkin Highway between Guildford Road and Reid Highway to freeway-standard with three lanes in each direction, new interchanges at Collier Road and Morley Drive, and a flyover at Benara Road.

The project is acknowledged to have set a new benchmark for ‘Infrastructure Sustainability’ in Australia, having:

- realised 11 independently verified sustainability innovations;
- dramatically reduced capital and operational costs;
- demonstrably enhanced economic, social and environmental outcomes;
- achieved the highest ever IS AS-built Rating (95 points) date; and
- won national awards for outstanding achievement and impact

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John Holland on on behalf of Main Roads WA
Project Location
Perth, WA
Project Value
$200M AUD
Key Services
Ratings & Assurance
Carbon & Lifecycle Impacts
Resilience & Adaptation 
Environmental Regeneration 

Set a new benchmark for ‘Infrastructure Sustainability’ in Australia.

NorthLink WA Southern Section

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