A3 Salerno-Reggio Calabria Motorway, AS R17 – AS R18

3TI carried out the detailed design and Work supervision of ASR17: macro-lot 3 part 1 from km 139+000 to km 148+000 and the detailed design of ASR18: macro-lot 3 part 2 from km 153+400 (excluding Laino Borgo Interchange) to km 173+900 (excluding Campotenese Interchange).

ASR17: the project involves a 10 km stretch of highway in a mountainous area comprising 4 tunnels and 4 viaducts, among which are the Serra Rotonda natural gallery, a double-lane tunnel 3,787 meters long, with 6 pedestrian and 4 vehicular bypasses, and the Caffaro viaduct, approximately 400 meters long, with three spans each exceeding 110 meters in length.

ASR 18: It consists of 4 sections: DG28, DG29, DG30, DG31. This approximately 20.5 km stretch of highway, located in a mountainous area, includes numerous tunnels and viaducts. The project involves realigning the route between the Jannello viaduct and the Italia viaduct; realignments between the Mormanno junction and the Bettendiero II viaduct; and routine maintenance of the “large span” section of the Italia Viaduct.