California This is a picture of the construction Golden Gate Bridge in San Francisco, taken in about 1935.
Modern bridges are some of the most amazing feats of all human architecture.
They are so important and so ubiquitous that we almost take them for granted. But we wanted to find out more. These are some of the questions we explored. We also looked at pictures of other bridges throughout the world. Then we tried a bunch of experiments building our own bridges, to see which bridge designs worked well, and which not so well.