Transurban set ambitious sustainability goals for its $512 million Logan Enhancement Project. CPB Contractors, with the GHD/SMEC design Joint Venture (JV), were the D&C contractors. The Design JV engaged Losee Consulting to lead sustainability through the:

• Four gate sustainability engineering design
• Infrastructure Sustainability (IS) rating base case and weightings assessment
• Sustainability management plan and governance arrangements
• Modelling of energy, water, and materials
• Climate change adaptation planning
• Coordinating evidence collection for the IS rating submission.

The project’s several exceptional sustainability initiatives included:

• 220,000 tonnes of EME2 asphalt laid with significant CAPEX savings and 6400 tonnes of greenhouse gas emissions avoided
• $20 million investment in fauna crossings, including a new BEBO arch fauna overpass, rope crossings, glider poles, and underpasses
• First Australian infrastructure project to recycle soft plastics
• Paperless design review system, saving over 150,000 sheets of paper.

The project achieved an ‘Excellent’ IS Design rating with 69 points, later achieving a ‘Leading’ As Built rating.