Repairing and strengthening metal bridge in Zona Franca in Barcelona

The bridge required comprehensive intervention due to various problems. The assessment found significant spalling of the roadbed despite the fact that it has been repaired on a regular basis coupled with generalised degradation of the metal profiles due to corrosion caused by various factors such as dirt and wear and tear of the protective paint. The bridge’s frame was adversely affected by the salinity of the marine environment, an ineffective drainage system and the lack of a sealing bead at the joints. There was also deterioration of the coating on the steel bars of the foundation and abutments. Several actions were carried out to solve these problems: 

- Refurbishing and reinforcing the lower deck: cleaning metal structures, reviewing parts with defects and carrying out the planned reinforcement work, sealing profiles and maintenance and replacement of supports, including elastomeric supports at the base of the piers and protective painting.