Since 1914, time when is constructed this road, in the zone of Dukat (about 7 km length), continually was appeared problems of instability of slopes, landslides which time by time had damaged the road. Many times engineering measures to stabilize situation was undertaken. Nevertheless the road continues damaged by phenomena's of loss of stability and landslides.
In this paper we would like to present our study about this phenomenon, to find the causes of continually landslide and which can be the main factor of instabilities. Also we want to take some recommendation about engineering measures to stabilize the situation.