NorthConnex roadworks & closures

Planning a trip? Before you drive, check the most up-to-date road closure information so you can plan an alternative route.

Planned closure details

During August, the NorthConnex tunnel will close for planned maintenance work from 10pm to 5am on the following dates:

  • Northbound and Southbound – Saturday 7 August to Friday 13 August 2021 (6 nights)
  • Northbound and Southbound – Sunday 15 August and Friday 20 August 2021 (5 nights contingency)


Traffic Changes

To minimise disruption to road users, crews will be working at night. During closures, motorists can detour via Pennant Hills Road to join the M1 at Wahroonga or M2 at West Pennant Hills.

Overhead variable messages and traffic control signs will alert road users of changes to traffic conditions.

Visit Live Traffic NSW for the latest traffic updates and information.



Northern Interchange detour

Detour map


Southern Interchange detour

Detour map


Please visit Live Traffic for further updates.