Motorists are advised of changed traffic conditions from next week on Summerland Way to carry out slope remediation work at Kilgra, about five kilometres north of Kyogle.

Work starting Monday, 20 January will be carried out from 7am to 6pm on weekdays and 8am to 1pm Saturdays, and is expected to be completed by July, weather permitting.

Single lane, alternating traffic flow arrangements and a reduced speed limit of 40km/h will be in place for the duration of work for the safety of workers and road users.

Motorists are advised to allow up to five minutes extra travel time, 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.