On the interaction between a large landslide and a bridge

The roads and motorways bridge inspection program which is undergoing in Italy is revealing the high number of infrastructures interacting with landslide phenomena. It cannot be otherwise in a country characterized by such a complex morphology. A peculiar example of such soil-structure interaction is that represented by the Rio Bavera bridge in Triora whose abutment is affected by a large landslide. The paper describes this interaction from the phenomenological point of view. The geological and geotechnical investigation carried out to characterize the behavior of the soil and rock formations constituting the large landslide will be illustrated together with the monitoring activities undertaken to understand the mutual interaction between the landslide and the bridge.