NSW: Changed traffic conditions on the Cahill Expressway from the Warringah Freeway
Source: Transport for NSW
The new Mount Street underpass (5.4 metres in height) will be opening from 5am Friday 5 September, providing dedicated access for Cahill Expressway motorists traveling to City East, Eastern Suburbs and Sydney Airport.
The current heavy vehicle access on the Cahill Expressway remains the same, including for dangerous goods vehicles.
Motorists are advised of changes to the southbound access to the Cahill Expressway from the Warringah Freeway, including:
- From south of the Ridge Street shared user bridge, the general traffic lane to the Cahill Expressway will be diverged around a new worksite
- The general traffic lane for the Cahill Expressway will shift to the left side of the worksite
- For southbound access to the Cahill Expressway, motorists will need to drive to the left of the worksite, temporarily shifting away from the mainline. Motorists will then be able to travel through the newly constructed Mount Street underpass and continue to the Cahill Expressway south of High Street
- Motorists travelling to City East, Eastern Suburbs and Sydney Airport should continue driving on Cahill Expressway (Lane 8) through the new Mount Street underpass.
There will be temporary barriers around the work areas for up to eight months as motorists drive through the new Mount Street underpass.
Mount Street underpass access on the Warringah Freeway
Artist impression of the final Mount Street interchange lane configuration due to be completed in 2026
For more information on this work, contact the project team via email at whtbl@transport.nsw.gov.au or on 1800 931 189.
For the latest traffic information, visit www.livetraffic.com, download the Live Traffic NSW app or call 132 701.
