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As a result of extensive research work performed on durability design and long-term performance of concrete structures in marine environments, new procedures for probability-based durability design have been shown to provide a more realistic basis for the analysis. This approach has been successfully applied to several new concrete structures, where requirements for a more controlled durability and service life have been specified. It is commonly assumed that the dominant degradation mechanism for reinforced concrete structures in a marine environment is the corrosion of the reinforcement due to the presence of chlorides. A design approach based on the verification of the serviceability (durability) limit states has been suggested, examples of which are depassivation of reinforcement, cracking and spalling due to corrosion, and collapse due to cross section loss of reinforcement. With this design approach the …