Robot drones to check underwater bridge condition: NFR

The NFR oversees railway operations across parts of Northeast India and North Bengal, covering major rivers including the Teesta and the Brahmaputra. The zone has around 34 key bridges, 18 of which fall under the Alipurduar Division. Among them is the iconic Saraighat Bridge over the Brahmaputra in Assam. In total, nearly 4,200 km of railway lines depend on these bridges.