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Bridge over Wadi Dib



Cable-stayed bridge

Wilaya of Jijel

Mario Paolo Petrangeli

Length: 502m
Main span 280m
Height: 140m from the top of the tower to the ground
Deck width: 13.30m
The cable-stayed bridge over Wadi Dib has been designed in a three-year period between 1994 and 1996. The bridge crosses the Dib valley near Constantine in Algeria, a valley now submerged by an artificial lake created by the nearby dam.
The prestressed concrete deck comprises three spans of 111m, 280m and 111m and is sectioned in 4m-long precast elements. Special joints have been studied both to reduce the construction time and to guarantee sufficient ductility.

Eurocode 8 - Design of structures for earthquake resistance, was used to check the bridge under a PGA of 0,30g.