India's longest rail bridge in Kerala

17th Feb 2011

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The scenic Kerala backwaters can now boast of an engineering marvel — the longest rail bridge in the country at 4.62km. The bridge is part of a 8.6-km railway link connecting Idapalli to Vallarpadam in Kochi, where the shipping ministry has constructed the International Container Transhipment Terminal (ICTT). 

Built by the Rail Vikas Nigam Ltd at Rs 200 crore, the bridge came up in a record 28 months. The rail link between Idapalli railway station and ICTT can also boast green technology to address environmental concerns. The alignment cuts through densely populated habitations and backwaters. "We used minimum cement to reduce greenhouse effect," said a rail official. Land acquisition being a sensitive issue in Kerala, RVNL took an elevated route — a 40m-long girder erected at a curve of 2.5 degrees — to cut down on land use in densely populated areas and also go across the backwaters. 

"This led to the conceptualization of a 4.62km-long elevated structure," RVNL managing director Satish Agnihotri told TOI. The land was acquired in densely populated areas, thanks to an "out-of-box" solution. The compensation package did not pinch the displaced. Current market price of houses -- without any depreciation of the properties -- was offered. Also, a plot of similar size was allotted to the displaced in an equally or better developed area. Each family was paid rent for six months till the new house came up. 

The new bridge eclipses Dehri-on-Sone's record as the longest rail bridge in the country.