Resurfacing is taking place on the roundabout at the intersection of the Bruxner Highway (Johnston Street) and the Summerland Way (Centre Street) Casino, weather permitting until 6am Thursday 1 February.
The roundabout will be closed to all vehicles except B-doubles during work hours.
Detours between Lismore and the Casino CBD are available via Walker and North streets, between Kyogle and Casino CBD via West and North streets and between Kyogle and Lismore via Dyraaba and Walker streets.
Traffic control and a reduced speed limit of 40km/h will be in place for the safety of workers and motorists.
Motorists are advised to drive to the conditions, and follow the directions of signs and traffic control.
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.