India builds "Green" bridge

Yikes! "We used minimum cement to reduce greenhouse effect". A bridge built on sand????



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.

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Posted by John J. Ray (M.A.; Ph.D.).