Council is working with Transport for NSW to prepare for recovery works which may commence later this week, subject to weather conditions and further geotechnical and environmental investigations.

"Advice received from TfNSW is that closures are likely to be in place for a minimum of three weeks as there are six major landslips identified that spread from Myers Bluff (east of Thora) to Sherrard Falls," the update says.

The highest priority is clearing Waterfall Way at Sherrard Falls to allow access for emergency and essential services vehicles to move between Dorrigo and Bellingen, however it is unlikely that this will occur before late next week, which is Easter.

The dramatic landslide at Myers Bluff, between Bellingen and Thora, will not be open to vehicles until at least the end of the third week in April.

Council encourages those who must travel between Dorrigo Mountain and the seaboard to use Eastern Dorrigo Way (Cascade) but are working to provide another alternative route for essential travel purposes.

"Consequently, our community is strongly encouraged to only travel when it is absolutely necessary to minimise impacts on our compromised roads, as there are limited resources available to address the significant number of defects across our entire road network to maintain essential access."