Operation in the South

Above ground facilities

The Southern Interchange includes buildings needed to operate NorthConnex. The community was able to participate in the design of these buildings during a consultation process for the Urban Design and Landscape Plan. The permanent buildings in this area include:

Motorway Control Centre  

The centre will include a tunnel control room, training and incident response room, workshop, emergency vehicle depot, garage and on-site parking for workers and visitors. It will be staffed 24 hours a day, 7 days a week, by about 30 people.

Southern Ventilation Facility

The ventilation outlet will be located on the north western corner of the Hills M2 Motorway/Pennant Hills Road interchange. During operation, the ventilation system will draw fresh air into the tunnel and emit air via the ventilation outlet. Air quality modelling predicts the ventilation outlet will have a negligible impact on local air quality. You can read more about air quality and NorthConnex here.

Maintenance yard

To ensure any traffic incidents within the tunnel are attended to immediately, a maintenance yard at the Southern Interchange will house tow trucks and other emergency response equipment.

A fact sheet is available.

In the tunnel

You can read about the systems installed in the tunnel to ensure a safe journey here

Getting in and out of the tunnel

The on and off ramps for NorthConnex in this area are:

  • A northbound on ramp directly from the Hills M2 eastbound (west of the intersection with Pennant Hills Road)
  • A westbound off ramp exiting directly onto the Hills M2 (west of the intersection with Pennant Hills Road)
  • A northbound on ramp from Pennant Hills Road (north of the intersection with the Hills M2)
  • A southbound off ramp onto Pennant Hills Road (north of the intersection with the Hills M2).
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