Landslide monitoring and maintenance plan along infrastructure: the example of the Maratea major rockfall (Southern Italy)

On the 30th of November 2022, a major rockfall event occurred in the Triassic dolostones of Castrocucco cliff (Maratea, Southern Italy), destroying the underlying SS18 national road with no fatalities or injuries. Successively, engineering works were applied to allow the restoration of the road, although the construction of a bypass tunnel to avoid the cliff was designed as the ideal solution. Before the tunnel can be completed, the critical importance of the road required its reopening with a high-resolution monitoring system that enables the timely road closure to the traffic in case of new failure. In this study, we describe the data collection and the reconstruction of the rockfall kinematics, as well as the susceptibility analysis carried out for the development of the monitoring system that allowed the reopening of the road. Such methodological approach and workflow could be applied to similar situations where critical road infrastructures lie in areas of high susceptibility to rockfall.