bridges

"We have needed ways to cross valleys, rivers, and mountains for as long as there have been people on Earth. Over time, scientists and engineers began to understand the laws of nature that apply to bridges and tunnels. They understood the strengths and weaknesses of materials better, too--and began to create new ones, like concrete and steel. This . . . guide to bridges and tunnels explores unique examples of each, what they're made of, and all of the unexpected twists and turns taken in their development"--Provided by publisher.

"Take a closer look at some of the world's most famous bridges--from the ancient Roman Pont du Gard to the iconic Golden Gate Bridge. Discover why each of these . . . structures was built, and investigate the engineering and ingenuity behind their design and construction"--Provided by publisher.

Upon their father's return, the five Dunbar boys, who have raised themselves since their mother's death, begin to learn family secrets, including that of fourth brother Clay, who will build a bridge for complex reasons, including his own redemption.

A mother tells her daughter the story of designer and engineer Emily Warren Roebling who helped design and build the Brooklyn Bridge. Though she was not an engineer initially, her husband and her father were tasked with designing the bridge. But when her husband died and her father became ill, only Emily had enough knowledge of the project to finish the work. Her work ethic and knowledge impressed everyone she worked with.

Describes the techniques used and difficulties faced in building Colorado's Royal Gorge Bridge, the highest suspension bridge in the world and a popular tourist attraction.

Explores the engineering challenges behind building bridges, as well as the creative solutions found to overcome those challenges.

"Explains the history behind and the process of building the Golden Gate Bridge"--.

Bridges are a big part of how people get from place to place. But how do they work and how are they built? In this engaging text, readers will explore these important engineering marvels that link places divided by water. Along the way they'll learn how to build their own model bridge with a step-by-step guide accompanied by full-color photographs of each step. Accessible text illuminates the science behind every span we drive over, and sometimes under.

Discover the engineering behind bridges.

Simple text and color photos explore the design and construction of bridges, presenting famous examples around the world, such as Tower Bridge and the Golden Gate Bridge.