can anybody tell me that how's the process to build a piller of bridge in deep sea,means how do they dig out

Question

I am a college going student n I want to know abt the construction of flyovers on the sea.Basic thing I want to know is how do they insert the piller into deep sea

Answer 1

There are several methods. The three most common are:

1) Caisson on bedrock
2) Piles driven to deep bed rock
3) Permenant casings drills in to bed rock.

Answer 2

Steveo got it right go with that also check out modern marvels there is video of the process

Answer 3

This might help and its free puts Traffic Generating on auto