S. Alessio and S. Stefano Viaducts are steel highway viaducts that will provide service in Calabria region in Italy. The viaducts have been designed as base isolated. The seismic isolators have been designed and manufactured by TİS Teknolojik İzolatör Sistemleri A.Ş. Information about the project and isolation system is presented at the table below.

Name of the produced devices TİS Double Pendulum (TDP)
Project year 2017
Total number of devices 81 (Yapı: 77 + Prototip: 4)
Displacement capacity of the devices ± 270 mm
Load bearing capacity of the devices 1700 / 5600 kN