Home About Us News Closing of the main span of Constantine viaduct, the second African cable-stayed bridge, is successfully completed

Closing of the main span of Constantine viaduct, the second African cable-stayed bridge, is successfully completed

A new reference for Freyssinet in Algeria


The keying operation for the "eighth wonder" of the city of Constantine in Algeria was completed on Thursday 29 May 2014 after 18 months of concurrent work on four fronts including three balanced cantilevers and a cast-in-place span, on a 24/7 work schedule.
This 1,150 m long structure crosses the Rhumel and is supported by a single central plane of 64 H2000 stay cables supplied by Freyssinet and representing about 400 tonnes of strands.  The longest stay cables (146 metres) are fitted with IRD dampers and the shortest with IHD dampers.

 
Freyssinet also supplied and provided technical assistance for installation of the 367 tonnes of longitudinal and transverse prestressing, as well as 19 tonnes of Freyssibars to reinforce the slender 130 m tall towers.
 
Located in an earthquake risk zone, the bridge is fitted with 56 pot bearings and 12 banded elastomeric bearings, designed and produced to withstand major earthquakes and adapt to large variations in temperature (approximately 60°C).