Perhaps more than any other engineered structures, bridges represent the height of resourcefulness both in their design and their use of materials. Stone, brick, timber, wrought iron, steel, and concrete have all been effectively employed in a myriad of structural forms, many of which still stand as testimony to the brilliance of bridge designers throughout the history of civilization. This workprovidesboth an admiring and a technical account of bridge engineering through an exploration of several remarkable examples. Demonstrating historic significance beyond their utilitarian function, the bridges encountered in these pages are true landmarks, as worthy of emulation as they are preservation.