Work to repair and widen Tinderry Road is underway.
Cooma-Monaro Shire Council began construction and maintenance on the mountain section of the road on October 30.
The work will be carried out on 8.7km to 9.1km of road which is very narrow in sections.
Council's director of engineering services David Byrne said work would include widening, strengthening of the road and upgrading existing culverts.
"The scope of work includes widening of current road formation width in part, reconstruction of pavement layer depth to strengthen the road, improving cross falls to provide better drainage, installation of new cross road culverts and upgrading of some existing culverts again for better drainage," he said.
"Some sections of the mountain road are very narrow and to widen the road in some of these parts staff have had to arrange for contractors to drill and blast the rock to allow the road to be safely widened."
Council has $280,000 allocated from the Roads to Recovery Program for the work in this year's budget.
Mr Byrne said residents were very supportive of the project and were assisting council by minimising the use of the road where possible.
Work is expected to be completed by November 30.