This book captures the intellectual spirit and interdisciplinary synergy of a global forum dedicated to redefining the future of civil engineering through innovation and sustainability in the field of transportation engineering. The proceedings of the 1st International Conference on Innovations and Sustainability in Civil Engineering: Shaping Tomorrow’s Infrastructure (ISCESTI – 2025), held from May 14–16, 2025, at the National Institute of Technology (NIT) Patna, present a groundbreaking compendium of scholarly research, transformative ideas, and forward-thinking practices in the realm of civil infrastructure. This book delves into contemporary challenges and advancements across a broad spectrum ranging from intelligent traffic and pedestrian systems, integrated traffic management strategies, and cutting-edge safety protocols, to next-generation transportation planning, design innovations, and policy frameworks. It critically examines demand modelling, the socio-economic dimensions of transportation, and the economics of infrastructure development. A special emphasis is placed on sustainable materials and technologies to pavement design and management, with focused insights into low-cost, eco-friendly alternatives, recycling methodologies, and the reuse of materials in infrastructure systems. Serving as a valuable reference, this book is intended for researchers, academicians, industrial practitioners, and policymakers engaged in sustainable infrastructure development and related disciplines. The diverse contributions encapsulate the latest innovations in transportation engineering, offering data-driven strategies and sustainable solutions that address the complexities of a rapidly urbanizing world. It provides insights into cutting-edge innovations and sustainable solutions, aligning with the evolving needs of civil engineering and environmental sustainability.