Tonkin Highway Extension granted Infrastructure Sustainability Planning Rating

Trish Sunga Trish Sunga Australasia Press Office,Sydney
28 July 2022

The Tonkin Highway Extension project in Perth, Western Australia, has achieved ‘Bronze’ under the Infrastructure Sustainability (IS) Rating Scheme for Planning, paving the way for the future project to deliver strong sustainability outcomes. Arup has been engaged by Main Roads WA to undertake project development works including investigations and design.

The milestone Bronze Planning rating from the Infrastructure Sustainability Council – and Arup’s first IS Planning rating – recognises the joint efforts of the Arup-Main Roads project team. The team demonstrated experience across a full set of ‘credits’ including Urban and Landscape Design, Resilience, Climate Change, Resource Efficiency and Stakeholder Engagement. 

The project will extend Tonkin Highway from Thomas Road, Oakford to South Western Highway, south-east of Mundijong. Design details include 14 km of four lane dual carriageway, new and upgraded intersections, new bridges over freight rail lines, shared paths to local path networks and pedestrian, cyclist and equestrian underpasses. 

Arup brings expertise and innovation in sustainable infrastructure design to this project. Our experience includes implementing sustainable design on Brisbane’s Port Drive Upgrade which achieved an IS Design v1.2 ‘Excellent’, preserving 29 hectares of forest on the Bruce Highway Upgrade at Caloundra, and researching sugarcane pulp as a sustainable material in road construction. We previously partnered with Main Roads Western Australia on the Great Northern Highway Muchea to Wubin Stage 2 Upgrade project, saving 19,932 Co2e tonnes by using local natural gravel.

Integrating sustainability from the planning phase onwards helps identify the opportunities and benefits to deliver the strongest sustainable outcomes for the asset and the community. ” Thilanka Silva Thilanka Silva Project Director

The project aspires to achieve the following outcomes through integrating sustainability:

  • Improve community amenity, mobility and travel choice whilst reducing indirect environmental impacts.

  • Improve operational efficiency and social amenity by providing a viable vehicle transport network to enhance connectivity.

  • Improve economic prosperity and productivity by attracting investment and growth through reduction in urban congestion and improved travel times.

  • Minimise the environmental footprint (emissions, pollution, waste, land use and resources) of the Tonkin Highway Extension project.

The IS Rating Scheme is Australia and New Zealand’s only comprehensive rating system for evaluating economic, social and environmental performance of infrastructure across the planning, design, construction and operational phases of infrastructure assets.