Richard Halliburton's Complete Book of Marvels Study Guide
The San Francisco Oakland Bay Bridge is the direct road route between San Francisco and Oakland and it has one of the longest spans in the world. The eastern main cantilever span is being replaced by a new more earthquake resistant bridge.
Sunrise Video - The San Francisco Bridge Video
CHAPTER 1- Book of Marvels - Richard Halliburton- Teacher Resources for Living Books Curriculum