Tay Bridge disaster Tay Bridge disaster During a violent storm on Sunday 28 December 1879, the first Tay Rail Bridge collapsed as a train from Wormit to Dundee passed over it, killing all aboard. The bridge—designed by Sir Thomas Bouch—used lattice girders supported by iron piers, with cast iron columns and wrought iron cross-bracing. The piers were narrower and their cross-bracing was less extensive and robust than on previous similar designs by Bouch. Bouch had sought expert advice on wind loading when designing a proposed rail bridge over the Firth of Forth; as a result of that advice he had made no explicit
Tay Bridge disaster he had never checked speed through the high girders. Painters who had worked on the bridge in mid-1879 said that it shook when a train was on it. When a train entered the southern high girders the bridge had shaken at the north end, both east-west and, more strongly, up-and-down. The shaking was worse when trains were going faster, which they did: 'when the Fife boat was nearly over and the train had only got to the south end of the bridge it was a hard drive'. A joiner who had worked on the bridge from May to October 1879