NorthConnex maintenance and tunnel closure, May 2025

To ensure NorthConnex M11 continues to operate safely, the tunnel will close between West Pennant Hills and Wahroonga for routine maintenance from 9pm to 5am on Sunday 4 May to Thursday 8 May 2025.

NorthConnex M11 will remain open for travel in both directions during the day. 

Traffic Changes

To minimise disruption to road users and for the safety of our workers, these works will take place at night. 

During tunnel closure times, 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 all changes to traffic conditions in the area.

Stay up to date by visiting Live Traffic NSW for the latest traffic and information. 

Subscribe for real-time road incident and event notifications on the Linkt app.

Contact us

NorthConnex thanks the community for their patience and understanding and apologises for any inconvenience during this time.

For enquiries or feedback, please contact us. 
 

West Pennant Hills Southern Interchange detour via Pennant Hills Road

Wahroonga Northern Interchange detour via Pennant Hills Road