Itinera S.p.A. provides construction services. The Company offers construction and maintenance of road, rail, port, tunnels, subways, and dams. Itinera operates internationally.tinera has been active in large-scale infrastructure projects and civil construction for more than 75 years, in Italy and around the world.Established in 1938, at the beginning of the 1960s Itinera became part of the Gavio Group, the fourth toll road operator in the world with 4.156 km of roads under concession.Gavio Group is the main toll road operator in the North-west of Italy with approximately.