How long did it take to build an aqueduct?

Related questions

1. What is the difference between an aqueduct and a viaduct?
2. What is the purpose of a viaduct?
3. Why did the Aztecs build causeways?
4. What is Rob bridge?
5. What were aqueducts made of?
6. What does an aqueduct do?
7. How did the Romans clean their polluted water?
8. What is the purpose of a Aqueduct?
9. Why do aqueducts have arches?
10. What is foot over bridge?

Tags

1. #period
2. #miles
3. #water
4. #built
5. #aqueducts
6. #still
7. #years
8. #bring
9. #those