SS. 311 “Nepesina” – Variant of Civita Castellana

Construction of road lot for a length of 6,000 lm and moving materials, miscellaneous works, road superstructures and paving

Main works include 2 viaducts in metal structure with 11 lm spans, 2 viaducts in pre-stressed reinforced concrete girders with 40 lm spans, 7 flyovers, lm 170 of artificial tunnel, 1 viaduct with bays spanning 34 lm