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Duplex stainless steel to be used in Pamban Bridge

Steel News - Published on Fri, 15 Mar 2019

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New Indian Express recently reported that one of India’s century old iconic structures, the 2.34-km railway bridge over Palk Strait connecting Rameswaram island, with the last station on mainland of Indian peninsula Mandapam, is entering its final phase of use. Railways’ ambitious project of a second bridge parallel to Pamban bridge is set to take off in another few months. The new bridge will cost INR 250 crore and come up at a location which is known as the second most corrosive region in the world after Florida in the US.

In order to tackle the problem of corrosion and other maintenance-related issues, Railways has decided to use duplex stainless steel as an integral component for the fabrication of four girders of the new bridge. To this effect, the Rail Vikas Nigam Limited, an engineering arm of Railways, which has been entrusted with the task of building the bridge, has invited bids to procure 120 tonnes of stainless steel.

The new Pamban viaduct will have 100 spans of 18.3-metre steel girders (1.83 km) and one navigational span of 72.5 metres. It will be three metres higher than the existing bridge with navigational air clearance of 22 metres above sea level. Because of vertical lift, full horizontal width of 72.5 metres will be available for navigation of ships and vessels.

The existing Pamban bridge was one of longest sea rail bridge when was built in 1904. It remained as the only surface connectivity between Rameswaram Island with mainland till a road bridge was built in 1988.

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Posted By : Rabi Wangkhem on Fri, 15 Mar 2019
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