Great engineering marvels Currently is Chenab Bridge.
Chenab Bridge is an under-construction rail bridge, located between Bakkal and Kauri in the Reasi district of Jammu and Kashmir (J&K), India. The 1,315m-long bridge is being built at a height of 359m. Once completed, it will be the tallest rail bridge in the world.
Konkan Railways has undertaken the mega-project of constructing a new railway line across the Indian state of Jammu and Kashmir between the towns of Udhampur near Jammu and Baramulla on the northwestern edge of the Kashmir Valley.
Chenab Bridge forms a massive steel arch, the first of its kind in India. The country has no codes or design guidance for such massive structures. Based on experiences drawn from similar projects worldwide, the design practices for the bridge are being followed.
The bridge is being constructed in one of the most complicated and isolated terrains. One of the biggest challenges involved was construction of the bridge without obstructing the flow of the river. Approach roads, five kilometres in length, were constructed to reach the foundations of the bridge.
The deck of the bridge is partly in straight horizon and partly in curves. It is located on a transition curve with changing radius. Construction is therefore being carried out in stages following the gradual change in the alignment. This is the first time a bridge is being constructed incrementally on a transition curve.
Cable cranes and derrick will be used to construct the bridge. The cable cranes used for the project will be the largest in the world.
Construction of the bridge is expected to require 25,000mt of steel, 4,000mt of reinforced steel, 46,000m³ of concrete and eight million m³ of excavation
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