Engineering and Tunnels

Outside The Beltway
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I am fascinated by anything to do with tunneling or underground engineering. No idea why but I can spend hours on YT looking at videos showing the deepest human made spaces.

This article about a undersea tunnel connecting Denmark and Germany is interesting because they are building a tunnel using blocks which will then be submerged (i suppose technically its not an underground tunnel).

Now the dreamer in me imagines a time when a similar tunnel is built under the Atlantic connecting the USA and the UK. Never going to happen but I have visions of a thousands of miles of roadway with underground stopping areas akin to small villages for weary travelers. :upside_down_face:.

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I love engineering, especially the large scale stuff.

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that would be interesting, although the depth of the Atlantic is no where close to being level and the pressure would be debilitating…

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Essayons!

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Eisenhower-Johnson sees an average of one fire a week inside the tunnels, so nice to see they are getting the new fire truck.

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I’ve read about this project for several years. Very ambitious and innovative. But the description “lego blocks” is not very appropriate. They are simply laying prefabricated sections of “tunnel” end to end in a trench dredged in the seabed. The Copenhagen - Malmo tunnel was constructed the same way. I suppose that because the sections are rectangular and themselves built in blocks instead of one continuous concert pour, some publicist for the project thought it would be cute to call them Lego blocks.

Cross section of the Öresund Bridge/Drogden tunnel section between Copenhagen and Malmo:

image

From the pictures in the link, the Fehmarnbelt tunnel will be pretty much the same.

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