Maintenance and rehabilitation of the “Incoronata” viaduct along the Salerno Reggio Calabria highway

This paper describes the inspections and field testing, as well as the analytical development for the retrofitting of the “Incoronata” viaduct (originally built at the beginning of the ‘60s) along the Salerno Reggio Calabria highway in southern Italy. The “Incoronata” viaduct is a cantilever type bridge, with cast in situ segments. The analysis developed indicates that the sound structural design of the original structure (design at a time when the segmental bridge construction technology was still experimental and the numerical analysis tools not common) has allowed the bridge to maintain sufficient degrees of reliability over a time span of about 50 years.