The book "Basic principles of design of span structures of reinforced concrete bridges from elements of mass production" by N. A. Kalashnikov is a unique work that will become an indispensable tool for engineers, architects and students studying bridge construction and design. In this edition, the author shares his deep knowledge and practical experience, which makes the book not only a theoretical, but also a practical guide. The book focuses on the basic principles of design of span structures, which are key elements of bridges. Kalashnikov focuses on reinforced concrete structures, which due to their strength and durability are widely used in modern construction. The author considers not only theoretical aspects of design, but also practical recommendations, which makes the material accessible and understandable to a wide audience. The book immerses the reader in the world of design, revealing the subtleties and nuances that can be decisive in creating safe and reliable bridges. Who can like this edition? First of all, the book will be of interest to students and graduate students of construction specialties, as well as young professionals just starting their careers in the field of design and construction . Practitioners will find here useful tips and tricks to help them work on real projects. In addition, the book will be useful to teachers who are looking for quality resources for their courses and lectures. The topics raised in the book cover a wide range of issues related to bridge design. Kalashnikov not only explains the basic principles and methods, but also discusses topical issues such as the use of new materials, mass production technologies of elements and the influence of climatic factors on design. These aspects make the book particularly relevant in the context of modern construction, where safety and efficiency requirements are becoming increasingly stringent. The author’s style is distinguished by clarity and logical presentation . Kalashnikov masterfully combines theory with practice, which allows the reader to easily absorb material. His experience in the design and construction of reinforced concrete bridges is reflected in each section of the book. Readers can expect not only dry facts and figures, but also live examples from practice, which makes studying the material fascinating and informative. N. A. Kalashnikov is the author of several other significant works in the field of bridge construction and construction technologies. His books have already established themselves as reliable sources of information, and this publication will not be an exception. Readers familiar with his previous writings will appreciate the consistency and depth of analysis Kalashnikov applies in his new book. In conclusion, “Basic principles of designing the span structures of reinforced concrete bridges from elements of mass production” is not just a textbook, but a real find for everyone interested in bridge construction. The book offers the reader not only theoretical knowledge, but also practical skills that will help in the future to implement successful projects. If you are looking for quality literature on bridge design, this book will be your reliable companion in the world of engineering.