{ "item_title" : "How Is a Bridge Built?", "item_author" : [" Andrew Crotts "], "item_description" : "Have you ever crossed a bridge and wondered how it got there?Bridges stretch across rivers, valleys, highways, and even oceans. Some are small enough to walk across, while others are enormous structures carrying thousands of cars every day. But how do people build something so huge-especially over deep water?How Is a Bridge Built? takes curious young readers behind the scenes to discover how engineers and construction crews turn an idea into an incredible structure.Kids will discover how engineers design bridges, test the ground, build foundations, construct giant piers, lift enormous beams into place, pour the roadway, add cables, and test the finished bridge for safety. Along the way, they'll meet the massive cranes, barges, pile drivers, concrete trucks, and other machines that make it all possible.With colorful illustrations and easy-to-understand explanations, this book transforms one of the world's most impressive engineering achievements into an exciting journey kids can understand.Perfect for curious kids who love construction, big machines, engineering, vehicles, and discovering how things are built.Part of the How the World Works series-educational books that reveal the amazing systems, machines, and people behind the everyday world.", "item_img_path" : "https://covers4.booksamillion.com/covers/bam/9/79/817/584/9798175841047_b.jpg", "price_data" : { "retail_price" : "12.99", "online_price" : "12.99", "our_price" : "12.99", "club_price" : "12.99", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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