BRIDGES

The development of bridge construction is discussed in this book, which is one of a series about the science and history of the world's largest structures. Thousands of years ago people used natural bridges, such as fallen tree trunks to help them cross rivers, streams and valleys. New technology and modern materials have helped us move on from these simple beginnings. This book describes the building of the longest bridge in the world; illustrates the different types of bridge, arch, beam and suspension and shows the situation in which they are used. The construction of a suspension bridge is described in words and pictures and plans are given for bridges designed to link continents together.
 
The development of bridge construction is discussed in this book, which is one of a series about the science and history of the world's largest structures. Thousands of years ago people used natural bridges, such as fallen tree trunks to help them cross rivers, streams and valleys. New technology and modern materials have helped us move on from these simple beginnings. This book describes the building of the longest bridge in the world; illustrates the different types of bridge, arch, beam and suspension and shows the situation in which they are used. The construction of a suspension bridge is described in words and pictures and plans are given for bridges designed to link continents together.