This book contains 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 NIT Patna. This book highlights key themes, including geotechnical and geo-environmental engineering, solid waste management, air and noise pollution monitoring, environmental pollutant assessment, technological advancements in structural design and construction, material recycling and reuse in sustainable infrastructure, transportation engineering and planning, sustainable pavement design, intelligent transportation systems, urban and watershed management, and climate change adaptation. Serving as a valuable reference, this book is intended for researchers, academicians, industrial practitioners, and policymakers engaged in sustainable infrastructure development and related disciplines. It provides insights into cutting-edge innovations and sustainable solutions, aligning with the evolving needs of civil engineering and environmental sustainability.