The book "Methodical instructions on the topic "Variant design" for the course project "Iron-concrete beam bridge" in the discipline "P" by Nesterenko V. In. is an indispensable resource for students, graduate students and practicing engineers involved in the design and construction of bridge structures. This publication not only helps to understand the intricacies of design, but also serves as a guide to complex issues related to the choice of optimal solutions in the field of civil engineering. In this book, the author examines in detail the process of variant design, which is a key step in the development of reinforced concrete bridges. Nesterenko V. In. shares their knowledge and experience, describing the basic principles and methods that will help the reader not only to create a quality project, but also to avoid common mistakes The book covers all aspects of design, ranging from the choice of materials and ending with calculations on the strength and stability of the structure. This work will be especially useful for senior students and undergraduates studying in the faculties of civil engineering and architecture . It may also be of interest to professionals working in the field of bridge design and construction, who seek to update their knowledge and become familiar with modern methods. If you are looking for information on how to properly approach the design of reinforced concrete structures, this publication will be a real find for you. The topics raised in the book cover a wide range of issues, including environmental aspects of design, cost-effectiveness, and innovative technologies. Nesterenko emphasizes the importance of an integrated approach to design, which allows taking into account not only technical characteristics, but also social and environmental factors. This makes the book relevant in light of current trends in sustainable development and responsible design. The author's style is clear and accessible, which allows readers to easily absorb complex technical aspects. Nesterenko V. In. He is known for his other works in the field of design, where he also raises important questions concerning modern technologies and methods in construction. His experience and in-depth knowledge in this area make each page of the book a valuable source of information. The book “Methodical instructions on the topic of “Optional design” for the course project “Iron-concrete beam bridge” is not just a textbook, but a real find for anyone who wants to deepen their knowledge in the field of bridge structures design. It will be your reliable assistant in study and work, as well as a source of inspiration for creating unique and effective engineering solutions. If you are looking for quality design guidelines that will help you in your training or professional activities, do not miss the opportunity to familiarize yourself with this book. It will open up new horizons in the world of engineering and architecture, as well as help you become a true master of your craft.