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Constantine Viaduct, cable stayed bridge and approach roads, Algeria 

Photo: Dissing and Weitling
The historic bridges spanning Constantine's valleys will be joined by a contemporary cable-stayed bridge.
In June 2009 COWI signed a contract with the Brazilian contractor Andrade Gutierrez for the detailed design of the Constantine Viaduct project in the city of Constantine, Algeria.

Constantine, the third largest city in Algeria, is known as the "City of Bridges" due to its historic bridges across the deep ravine around the City.

The existing bridges include e.g. a suspension bridge and an ancient Roman viaduct. The new bridge will cross the River Rhummel and will be the first cable stayed bridge in Constantine.

The project comprises a 750 m long main bridge, including a cable stayed bridge carrying four traffic lanes. The cable stayed bridge will have central concrete pylons with a height of 130 m, a central cable plane and a concrete box girder.

The project includes a total road network of approximately 6 km consisting of a highway linking the main parts of Constantine and the interchanges in connection to the cable stayed bridge.

In 2008 COWI carried out the successful tender design for the Design-Build tender. COWI was supported by the bridge architects Dissing+Weitling for the tender design of the bridge.

The detailed design will be carried out in a 12 month period, and the construction of the bridge is expected to be completed in 2012.

Co-operation between Qatar and Denmark
The project is lead by COWI's major bridge experts in Denmark where bridge and all geotechnical design is carried out. Our office in Qatar is in charge of design of the linking highway and connecting interchanges.

LAST UPDATED: 10.03.2011