Foundation Secrets of the Bandra-Worli Sea Link
Foundation Secrets of the Bandra-Worli Sea Link 
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The Bandra Worli Sea Link is one of India’s major marvels of engineering. Please have a look at the foundations of a modern bridge below. How are such gigantic foundations built, especially when they stand on long concrete piles?
The Hidden Backbone : Deep Foundations
The long concrete piles of this structure are not reached only at the ocean bed. These long concrete piles travel through the ocean bed and extend even to the hard strata. The support from a strong hard strata is the reason why bridge is able to carry the huge weight - both the live and bridge load.
The foundation of the Bandra Worli Sea Link is supported by a total of 604 reinforced concrete piles. Out of these, 120 large piles, each 2 meters (6.6 feet) in diameter hold up the iconic cable-stayed sections of the bridge. The rest, 484 piles measuring 1.5 meters (4.9 feet) in diameter, support the foundations of the viaducts.
The Hybrid Design
Bandra Worli sealink Mumbai is not a pure cable-stayed bridge. It’s a hybrid design. One portion of this bridge is cable-stayed, and the other portion is a normal beam bridge as shown.
This bridge was completed in 2009, with a total length of 5.6 km. Look at the tower or pylon of this bridge below. This kind of design is called a diamond pylon. Diamond pylon bridges have high geometrical stiffness. They are also aesthetically striking.
That's all for this article. Thanks for reading.
