Skip to main content


NorthConnex – Now Open!

NorthConnex is a new nine-kilometre tunnel that links the M1 Pacific Motorway at Wahroonga to the Hills M2 Motorway at West Pennant Hills, saving up to 15 minutes in travel time per trip.

Motorists will be able to travel from Newcastle to Melbourne without a single set of traffic lights, reducing travel times for motorists and delivering state and national freight efficiencies. They will bypass 21 sets of traffic lights along Pennant Hills Road, and as an alternative route to the city, can bypass up to 40 sets on the Pacific Highway.

NorthConnex will deliver significant benefits to local communities by easing congestion and removing up to 5000 trucks per day from Pennant Hills Road. This will help improve safety, benefit local air quality and reduce traffic noise. 

NorthConnex is committed to sustainable and responsible operations. In October 2016, NorthConnex was officially awarded a ‘leading’ Infrastructure Sustainability (IS) design rating by ISCA, the first road project to receive the highest rating.

NorthConnex will use more than 5500 LED lights in place of traditional high-pressure sodium (HPS) or fluorescent lighting technology, to reduce electricity consumption by 18 per cent annually. This innovation equates to an overall reduction in carbon emissions of approximately 350 tonnes during the first year of operation alone.

The installation of variable speed drive (VSD) fans allows the speed of the fans to be adjusted based on the number of cars travelling through the tunnel. Using VSD fans instead of direct online fans represents a total energy savings of 44 per cent.

The NorthConnex project will reduce the total amount of vehicle emissions discharged into the atmosphere by providing a free-flowing motorway alternative to Pennant Hills Road. Improvements in air quality will be achieved by:

  • Avoiding stop-start traffic congestion. Heavy vehicles will emit up to 80 per cent less carbon monoxide, 70 per cent less oxides of nitrogen and 70 per cent less particulate matter.
  • Reducing overall travel times along the motorway.
  • Managing and dispersing vehicle emissions through an effective ventilation system that does not re-circulate air from one tunnel to another.
  • Developing specific ventilation modes to manage breakdown, congestion and emergency situations.
  • Designing the road with flat gradients to help reduce vehicle emissions.
  • Increasing the height of the tunnel to prevent incidents blocking the tunnel.

Other project highlights

Six principles for Future Transport

The Future Transport 2056 Strategy is focused on six key principles for the future of mobility in the state, which together aim to positively impact the economy, communities and environment of NSW.

Read more