How are bridges made on water bodies?

This was something that always puzzled me. How do they make bridges on water. How are the pillars constructed in water. Because there would be huge currents, so many external forces. How do they make a bridge then?

Did quite a bit of research online, could not find anything substantial… Then I asked the same thing to my father and this is what he had to say…

They need to go all the way till the ocean/sea bed and once they reach there… they start buiding a wall like structure with repeated interlocking units. This structure is made from below the sea bed to the sea level and then water from the structure is removed. Once this is done, they start dumping in ready-made concrete slabs to construct the pillars of the bridge.

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So what’s this blog about?

Another attempt? Well yes. Attempting to figure out another sustainable model (there are some other attempts going on parallel-ly). Well, we have a lot of questions in mind. we read up stuff, we do some research to find answers to these questions. This is an attempt to publish that little 15-20 minute research.

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