Scour revealed as cause of Irish bridge collapse | Magazine News | New Civil Engineer

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.

Iarnród Éireann (Irish Rail), which is responsible for the Republic of Ireland’s 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.

For more details, read below.
Scour revealed as cause of Irish bridge collapse | Magazine News | New Civil Engineer

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