In particular, the flyovers were built with continuous mixed steel/concrete beams over three spans: in compliance with the conditions in the shop drawings, the lower route was chosen, which allowed low approach embankments to be built. The shoulders were built with reinforced concrete structures (with limited height, which were either precast or cast in situ as laid down in the shop drawings). The supports include shock-transmitter type seismic devices as indicated in Italian Prime Minister's Ordinance No. 3274.
The underpasses are designed to maximize the use of precast components both for the decks (precast prestressed concrete beams) and the underlying structures (shoulders consisting of precast panels) in order to simplify the building firm's operational requirements.
The foundations of the flyover shoulders and underpasses were built with traditional large diameter drill or helical screw piles according to the nature of the ground. Considerable deep mixing consolidation or embankment draining works were entailed to counter short and long-term subsidence.