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NorthConnex is a nine kilometre twin tunnel linking the M1 Pacific Motorway at Wahroonga to the Hills M2 Motorway at West Pennant Hills in Sydney’s north.

It is the missing link in the National Transport Network improving freight access, connectivity and reliability across Greater Sydney. NorthConnex has been designed to the highest safety standards and as a solution to bypass one of NSW’s most congested routes, Pennant Hills Road.

NorthConnex is electronically tolled with no cash tollbooths. Linkt accounts and passes can be used to pay for NorthConnex tolls. To pay for your travel, open a Tag account, a Tagless account or buy a Sydney Pass.

Toll pricing

Use our handy toll calculator to work out the cost of your NorthConnex trips or compare your tolled and untolled travel options with Trip Compare.

Vehicle class

  • Class A
    • Vehicles 2.8 metres or less in height and 12.5 metres or less in length.
    • Typically, these vehicles are cars and motorcycles.
    • Also referred to as Class 2 or CAR.
  • Class B
    • All other vehicles.
    • Typically, these vehicles are trucks, heavy vehicles, and can include larger items being towed depending on the overall dimensions.
    • Also referred to as Class 4 or HCV.

Vehicle length and height – Vehicle dimensions on NSW toll roads include (without limitation) any towed vehicles such as a trailer, caravan or boat, and items placed on the roof of the vehicle or vehicles with elevated roofs.

Entries and exits

North to South

Coming from Newcastle or Hornsby Entry Exit
M1 Pacific Motorway southbound entry Yes No
M1 Pacific Motorway Pennant Hills Rd intersection on-ramp Yes No
Pennant Hills Rd, West Pennant Hills, southbound off-ramp
No Yes
M2 Motorway westbound exit No Yes

South to North

Coming from Blacktown, Parramatta and Sydney Entry Exit
M2 Motorway northbound entry Yes No
Pennant Hills Rd, West Pennant Hills northbound on-ramp 
Yes No
M1 Pacific Motorway Pennant Hills Rd intersection off-ramp 
No Yes
M1 Pacific Motorway northbound exit No Yes

Tunnel safety

The clearance height for the NorthConnex twin tunnels between Wahroonga and Pennant Hills is:

  • 5.1m both ways

Do not enter the tunnels if you are driving an over-height vehicle. Observe roadside signs for the alternative route provided.

Pennant Hills Road regulation

Certain vehicles travelling between the M1 and M2 motorways must use the tunnel unless they have a genuine destination accessed via Pennant Hills Road. Vehicles required to use NorthConnex (unless accessing a local destination via Pennant Hills Rd):

  • Trucks or buses over 12.5m long
  • Trucks or buses over 2.8m clearance height
  • A Class 1 vehicle up to 2.5m wide; and 4.6m clearance height; and 25m long
  • A Class 2 or 3 vehicle (which may currently be operating under a permit or notice approved to use Pennant Hills Rd but will no longer be permitted once NorthConnex opens)

For the full list of vehicles exempt from regulation visit the Pennant Hills Road regulation page.​

For everything you need to know about using road tunnels in Sydney, visit Transport for NSW.