For thousands of years, bridges have been used as a way to safely cross dangerous waterways, mountainous gaps, and perilous valleys. In fact, one of the oldest bridges in the world–Arkadiko Bridge–was built more than 4,000 years ago. And since then, humanity has seen bridge disasters that have been the subjects of many news agencies.
And despite how modern technology has made it much safer to use bridges, there are still some where the journey across can be treacherous if you aren’t careful. Intrigued? Click through this gallery to see where you can find these hazardous structures.