How can civil engineering leverage theoretical frameworks to enhance infrastructure sustainability, resilience, and efficiency? Considering principles from structural mechanics, fluid dynamics, materials science, and environmental engineering, how can theoretical models optimize design, construction, and maintenance processes? What role do theories in soil mechanics, transportation engineering, and urban planning play in mitigating risks and enhancing infrastructure performance? Furthermore, how can advancements in computational modeling, including finite element analysis and computational fluid dynamics, aid in predicting structural behavior, optimizing resource utilization, and minimizing environmental impact? Exploring these theoretical foundations can potentially revolutionize the way civil engineers conceptualize, design, and manage infrastructure projects.