Scour undermining a Victorian masonry bridge pier has been identified as the likely cause of a near-disastrous collapse of a section of railway viaduct on the Dublin-to-Belfast main line.
The bridge had been given the all-clear by engineers after a warning from a member of the public just days before part of it fell into the sea.
No-one was injured when a 20m section of the 176m-long bridge over the Broadmeadow Estuary between Malahide and Donabate stations in north County Dublin broke up on Friday 21 August just moments after a commuter train passed along the twin-track line. The deck section collapsed after a supporting masonry pier underneath crumbled.
Packed commuter trains carrying hundreds of people had been using the line minutes before the structural failure.
IarnrÃ³d Ãireann (Irish Rail), which is responsible for the Republic of Irelandâs railway network and rolling stock, said that a potential tragedy had been averted only by seconds. There would have been major loss of life with the likelihood of a derailed train ending up in the sea.
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Scour revealed as cause of Irish bridge collapse | Magazine News | New Civil Engineer
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