I understand they pour concrete and use large bolts but how are they able to ensure the bridge remains stable? The ocean floor doesn’t seem too predictable so I’m curious how they confidently do this.
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Ocean floor is the same as regular ground. Theres just water on it. Pump out the water, hit rock, you got good ground
There aren’t any bridges “in the ocean”, however the bedrock underwater is just as stable as it is on land, so they’re fine.
If you can get to the ocean floor within a reasonable cost, it is as “easy” as pumping water out and plopping a concrete tower on bedrock.
Sometimes that’s cost-prohibitive, so cities in the Pacific Northwest put some their bridges on pontoons. Pontoons are made of concrete, float in the water, and are attached to the bottom of the lake with steel cables. The bridge on top is designed to flex with the wind and tidal effects.
unlike the ground, the ocean floor is EXTREMELY stable, because its being compressed by all the water over it.
Every 10.33 meters = 1 atmospheric pressure.
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