This report presents current information on the service-life prediction of concrete structures, and is important to both the owner and design professional. Important service-life factors for concrete and methodologies for evaluating the condition of the structure, including definitions of key physical properties, are also presented. Techniques for predicting the service-life of concrete and the relationship between economics and service-life are discussed. The examples provided discuss which service-life techniques are applied to concrete structures or concrete components and necessary developments are identified.