Abstract New bridges offer opportunities for developing complete structural health monitoring systems for bridge inspection and condition evaluation of the bridges. Existing bridges provide challenges for applying state-of-the-art in structural health monitoring technologies to determine the current conditions of the structural element, connections and systems, to formulate model for estimating the rate of degradation, and to predict the existing and the future capacities of the structural components and systems. Advanced health monitoring systems may lead to better understanding of structural behavior and significant improvements of design, as well as the reduction of the structural inspection requirements. Great benefits due to the introduction of structural health monitoring are being accepted by owners, managers, bridge engineers, etc. This chapter provides health monitoring applications to bridges in different spots of the world as well as future trends and research needs.