This dimension groups transport infrastructure by whether it is still in active use, preserved or abandoned. A heritage railway, for instance, is "a railway operated as living history to re-create or preserve railway scenes of the past," per Wikipedia, a status quite different from an ordinary working line. Browsing by status separates infrastructure still doing its original job from infrastructure kept only for its history.
Facts
Comparison
Era of Emergence Status
Sources
1. Wikipedia: Tunnel of Eupalinos
WikipediaTunnel of Eupalinos, construction dateQuote, Tunnel of Eupalinos, construction date
The tunnel was dug in the mid-6th century BC, by two groups working under the direction of the engineer Eupalinos from Megara, in order to supply the ancient capital of Samos (today called Pythagoreion) with fresh water.
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