eli5: How did people build bridges over deep and/or dangerous water if they didn’t have the equipment to go under water?

Question

eli5: How did people build bridges over deep and/or dangerous water if they didn’t have the equipment to go under water?

In: 22

Answer 1

To add to the previous explanations – here’s an animation how a 13-meter tall bridge in Prague was built in roughly 60 years (Charle’s Bridge). It’s an official reconstruction of the local historic society how it was built. Should answer some questions. IIRC it started 1348 and was opened 1407. (not sure about it and too lazy to check it)

[https://www.youtube.com/watch?v=nJgD6gyi0Wk](https://www.youtube.com/watch?v=nJgD6gyi0Wk)

Edit> 1357 – 1402, meeting was less important so I actually checked it 😀