HiSCS undertook the preventive maintenance program for the elastomeric bearings of a vehicular cantilever box-girder bridge, carrying out a series of maintenance and repair works aimed at enhancing their performance, durability, and long-term reliability.

The works included the thorough cleaning of all bearing surfaces and the removal of accumulated dirt, dust, and debris. Protective measures were also implemented to prevent future material buildup and improve resistance to environmental exposure, including the installation of galvanized steel sheets at selected locations.

To enhance corrosion protection, oxidation was removed from the metal anchoring plates, and a polyurethane coating was applied to restore and improve the durability of the metal surfaces. In addition, all deteriorated Class 8.8 bolts were replaced with new galvanized Class 10.9 high-strength bolts, improving both structural integrity and corrosion resistance.

These interventions not only restored the bearings to an improved operational condition but also significantly enhanced their resilience against environmental and mechanical deterioration. As a result, the long-term serviceability, safety, and reliability of the structure have been strengthened, while future maintenance needs have been reduced, supporting sustainable performance throughout the bridge’s design life.