Replacement of Bearings in the Golden Horn Bridges

The renovation and widening project for the Golden Horn Bridge in Istanbul consisted of the construction of two new bridges and the repair of the existing bridge, erected in 1974. During a preliminary inspection of the concrete viaduct of the existing bridge, the cylinder of one of the roller bearings was found to have split in the longitudinal direction. After further investigation, it was found that the failure occurred due to fatigue and material problems. All the bridge bearings were therefore replaced because they were all of the same design. New pot-type bearings were installed in the steel bridge, and elastomeric bearings in the concrete viaduct. In total 16 bearings were replaced in the steel bridge and 20 in the concrete viaduct.