This is the 4799th most frequent Japanese word.
水道橋
"Water pipe bridge" or "aqueduct bridge."
In this sentence, 水道橋 is referring to the structure of a water bridge/aqueduct.
近代的な水道橋の設計は技術の進歩を示しています。
The modern design of aqueduct bridges indicates advancement in technology.
Once again, 水道橋 is used to denote the region near Suido-bashi station, implying a geographical area.
水道橋の近くには歴史的な建物がたくさんあります。
There are many historical buildings near Suido-bashi.
Here, 水道橋 refers to Suido-bashi as a station name.