Whether you're working on a full-sized railroad or attempting to create an accurate miniature representation, there will be times when the track needs to cross over an obstacle. This book will show you how railroads have crossed water, roads, other railroads, wide valleys, and small gaps. Learn how the technology of bridge building changed over the history of railroading, and how it differs around North America. Jeff Wilson helps you get the details right for your model railroad with chapters on different types of bridges as well as the supporting details. Packed with photos and drawings, Jeff has the information you need to make a plausible model. There's even a whole chapter dedicated to moving bridges explaining the construction of swing, bascule, and lift bridges. And don't forget the culverts-you can never have too many culverts! Book jacket.