Transport for NSW advises motorists of changed traffic conditions from this weekend on the Pacific Highway for essential maintenance work to be carried out at the St Helena Tunnel.
To minimise impact to motorists, the northbound and southbound lanes of the tunnel will be closed overnight on Sunday 15 and Monday 16 November from 7pm to 5am, weather permitting.
Traffic will be diverted onto the Hinterland Way between the Byron Road interchange at Bangalow and the Ewingsdale Road interchange at Ewingsdale.
Motorists are advised to allow up to 10 minutes additional travel time for the diversions, drive to the conditions and follow the direction of signs and traffic control.
Routine maintenance of the St Helena Tunnel is carried out every three months and involves a range of measures such as inspecting the various operating and safety systems.
Transport for NSW thanks motorists for their patience during this time.
For the latest traffic updates download the Live Traffic NSW App, visit livetraffic.com or call 132 701.