Rail traffic in Mumbai took a massive hit on Tuesday after a section of a bridge at Andheri, one of Mumbai's busiest rain lines, caved in following heavy rain in the city. The collapse of Gokhale Bridge left five people injured, but the damage could have been far worse since at least three jam-packed suburban trains had passed by, seconds before the bridge caved in on the railway tracks. The incident comes nine months after the Elphinstone Road foot over bridge crashed following a stampede that left 23 commuters dead. Heavy rain delayed flights and schools and colleges in several parts of the city declared a holiday. Tonigh on Livestream, we ask is negligence to blame? Have no lessons been learnt?