Bridges Explained: Viaducts - Aqueducts

Everyone uses bridges, but what do we really know about them? How and when were these bridges built? And, most importantly, why don't they fall down? In this easy-to-follow book, Trevor Yorke uses his own illustrations, diagrams and photographs to explain the basic principals and styles of bridges, so the reader can better appreciate them, recognize how they work and from what period they date. The book is divided into four sections.