`Review from previous edition David Blockley expertly describes the processes, relationships, materials and philosophies of engineering that give the world some of its most symbolic pieces of public infrastructure.' Hugh Pouliot, Canadian Geographic `In this fascinating exploration for lay readers, Blockly lucidly explains both the basic forces at work on every bridge.' Publishers Weekly `The two concluding chapters 'How safe is safe enough' and 'Bridges built by and for people' are masterly summaries of some of the biggest issues in engineering illuminating the nature of risk, how engineers think, and the need for them to understand uncertainy.' Kathy Stansfield, The Structural Engineer `David Blockley expertly describes the processes, relationships, materials and philosophies of engineering.' Hugh Pouliot, Canadian Geographic `Engaging and thoughtful book. Bridges deserve our attention.' David Rooney. History Today