Recently I read that it is more expensive to drill a tunnel than to build a bridge.
Both help people to get from A to B.
One is in everyones view, the other one almost invisible.
Bridges show the people: We are doing something! Look, the bridge is build, the investment was worthwhile. Come look, see and admire!
Tunnels on the other hand are helping, too, but they are not catching much attention.
I remember when my husband and I visited a famous sight for train lovers, the Semmering Bahn. It was built around 1850 to bring Austrian trains to the Mediterranean Sea over the Alps.
The Semmering Bahn contains bridges and tunnels. What made it the most expensive venture at that time were the tunnels, not the pretty bridges everybody admires today.
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