Galston Road will be temporarily closed to all road users through Galston Gorge across two days in mid-January for essential maintenance.
The work is part of the NSW Government’s $1.5 billion maintenance program which aims to improve the state’s road and bridge network.
More than 5500 vehicles use this section of Galston Road each day.
The 5.7 kilometre section of Galston Road between Calderwood Road and Montview Parade will be temporarily closed between 10pm Monday 13 and 10pm Wednesday 15 January, weather permitting.
The detour will be motorists will via Old Northern Road, New Line Road, Boundary Road, Pennant Hills Road, Pacific Highway and George Street.
Motorists are advised to allow up to 30 minutes of extra travel time while the detour is in place.
For the latest traffic updates call 132 701, visit livetraffic.com or download the Live Traffic NSW App.