This book covers multifaceted aspects of arch structures, addressing their technical, scientific, historical, social, and cultural dimensions, while also exploring future perspectives and challenges. It encompasses a broad range of structures, from historic examples to contemporary designs and the latest innovations, offering insights into cutting-edge solutions and visionary concepts. The proceedings of ARCH 2023 are aimed at scientists, designers, engineers, stakeholders, and contractors involved with arch bridge structures, providing a platform for sharing knowledge, experiences, and specialized information.