Discuss the mathematical modeling and analysis techniques used to predict the behavior of the bridge under various load conditions, such as vehicular traffic, wind, and seismic activity. Delve into the criteria for selecting appropriate construction materials, considering factors like tensile strength, compressive strength, and environmental durability. Address the significance of redundancy in bridge design to prevent catastrophic failure and the methods employed to incorporate redundancy without significantly increasing costs. Finally, explore the advanced testing and monitoring technologies that enable engineers to assess the performance of the bridge both during and after construction, ensuring it meets all safety and functionality standards over its operational life.