"How does the implementation of advanced materials, such as carbon fiber reinforced polymers $($CFRP$),$ impact the structural integrity and longevity of civil engineering infrastructure? Consider factors such as design flexibility, durability, and sustainability in your analysis. Discuss the potential challenges associated with the integration of CFRP in traditional construction practices, including cost implications, compatibility with existing materials, and structural retrofitting requirements. Furthermore, explore the implications of CFRP utilization on environmental sustainability, considering aspects such as material sourcing, manufacturing processes, and end$-$of$-$life disposal. Evaluate the role of innovative construction techniques, such as prefabrication and modular construction, in enhancing the efficiency and effectiveness of CFRP application in civil engineering projects. Finally, assess the future prospects and potential limitations of CFRP in revolutionizing the field of civil engineering, highlighting areas for further research and technological advancement."