7 years & up. Discover how bridges are made! Through full-color photographs, easy-to-read text, and hands-on projects, young engineers and architects are introduced to the world of bridges, including the types of bridges, how they're built, and key terms. This fast-paced nonfiction book will engage budding engineers while also covering U.S. Next Generation Science standards and National Science Education Standards. Paperback. 32 pages.