Roads, motorways, bridges, viaducts, railways, tramways, underground railways, cable cars, airport runways and relative complementary works (Category OG3 SOA).
Construction, maintenance or restoration of network interventions to networks necessary to allow for movement by road, rail and air, whatever their level of importance, complete with all connected, complementary or accessory work, including points, relative railway reinforcement, and all automatic, electromechanical, electrical, telephone, electronic works and electrical traction, as necessary to providing the user with a good service in terms of use, information, safety and assistance.
As examples, these include roads, whatever their level of importance, motorways, dual carriageways including points works such as special paving, artificial tunnels, ground-level or raised exits, ground-level car parks, works supporting slopes, reliefs, national and local railways, underground railways, cables and tramways of all technical characteristics, aeroplane runways and heliport aprons, stations, flooring in specific, natural and artificial materials, as well as bridges, even with complex technical characteristics, in iron, simple or pre-stressed reinforced concrete, pre-fabricated or cast in situ.
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Civil and industrial construction (Category OG1 SOA).
