Barrier Against Salt-Water Intrusion at the Estuary of Adige River

The project involves the construction of a barrier against the salt-water intrusion at the mouth of Adige River.

The new barrier consists of a structure equipped with a submerged bottom slab (top elevation at -4.00 m m.s.l.) supporting two piers bearing a walkway, which connects the two banks of the river, and two further additional vertical pillars, thus forming five spans of variable size equipped by steel gates. The walkway deck inner part is at an elevation of +6.00 m m.s.l. in order to guarantee the minimum clearance required in case of of flooding. The two riverbanks are also raised up to +9.40 m m.s.l. using concrete diaphragm walls for a length of 230 m on each side.

The two central spans of the barrier, each 8.65 m wide, are equipped with flap gates, hinged on their bottom side, for ruling the upstream hydrometric level.

The side spans of the barrier, 39.50 m, 46.05 m and 6.60 m wide, host the 6 + 7 + 1 retaining gates hinged horizontally at the walkway deck and with opening from below. 

The technical room for manoeuvring the gates is in the central part of the walkway’s deck (total width of 11.90 m).

The new barrier is completed by a Navigation Lock for small boats and a Control Room.