Gangtok, Feb. 20 -- The iconic Howrah Bridge, officially called Rabindra Setu, faces a serious threat from corrosion caused by the frequent spitting of gutka and paan masala. The chemicals in these substances, mixed with saliva, create an acidic residue that sticks to the bridge's steel framework. Over time, this has sped up corrosion, especially on the pillars and protective steel covers.

Technical assessments conducted over the years have shown concerning deterioration. By 2013, some steel parts had reportedly lost up to 50 percent of their original thickness in affected areas. While the bridge remains structurally sound, this loss of material strength raises long-term safety concerns if preventive measures are not continuously impleme...