by Transurban


A Global Compact member


A major road infrastructure project that features two nine kilometre tunnels linking two major motorways in Northern Sydney, NSW. The project's design and construction (and operations in the future) incorporate a number of significant sustainability achievements.

Project implemented: Construction started in June 2015

Project goal

To create a sector-specific sustainability exemplar

delivering on

why is this project important?

Seeks to set a new standard for sustainability performance in major road tunnel projects

impact to date

Reduction in carbon emissions through measures such as fully LED-lit tunnels
Reduction in projected total water use over the life of the project primarily through a ‘closed-loop’ water recycling system for tunnelling works
Reduction in the life cycle impact of materials by initiatives such as replacing up to 60% of cement in concrete mixes with recycled by-products such as flyash
Of excavated spoil is being reused with most helping transform a disused quarry site in Hornsby to a recreational asset for the local community

The ‘NCXHub’ training facility has been established to increase the skills of the existing project workforce, provide opportunities for young people, disadvantaged and underrepresented groups and to ensure workers from Western Sydney and the NSW Central Coast are targeted for training and employment to help address the state’s skill’s shortages. NCXHub provides a one-stop learning shop in a range of areas including literacy, numeracy, information technology, construction skills and leadership.

The project is forecast to transport at least 50 per cent of the heavy vehicles currently using a major arterial road in Sydney’s North, removing around 5000 trucks per day. Construction of NorthConnex is well underway and it is expected to open in 2019.

The project received a ‘Leading’ design rating (the highest possible rating) from the Infrastructure Sustainability Council of Australia’s (ISCA) under the Infrastructure Sustainability (IS) rating scheme.


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