What are the underlying principles and methodologies behind the design and construction of suspension bridges in civil engineering? Discuss the fundamental structural components and their roles in supporting the bridge's weight and accommodating dynamic loads such as traffic and wind. Explain the interplay between tension and compression forces within the bridge's cables, towers, and deck, highlighting how this balance ensures stability and resilience against various environmental factors. Furthermore, delve into the intricate process of site selection and feasibility studies, considering factors like geological conditions, topography, and traffic patterns. Explore the role of advanced computer simulations and modeling techniques in optimizing the bridge's design for maximum efficiency and safety. Additionally, analyze the environmental impact of suspension bridge construction and potential strategies for mitigating adverse effects on ecosystems and surrounding communities. Finally, discuss ongoing research and technological advancements shaping the future of suspension bridge engineering, including the integration of smart materials and innovative construction methods.