Multeen River Viaduct Replacement Project


Iarnrod Eireann


Structural & Architectural Design Section, Iarnrod Eireann


Dundrum, Co Tipperary

Brian Conneely & Co. Ltd were responsible for the replacement of the existing viaduct over Multeen River, Dundrum, Co. Tipperary with a new 3 span deck. 3 no. 12m long double track decks were constructed on-site and lifted into position during 36 hr TIII Possession using 1,100t mobile crane. The new bridge comprised of Steel beams and a shuttered concrete deck. The beams were delivered to site and set out on temporary plinths, then the soffit and parapet walls where shuttered and propped. We then steel fixed the steel into the deck and poured the concrete. The bridge was then treated with eliminator to waterproof the structure. The bridge comprised of three number decks and installation required each deck unit to be stitched together and waterproofed. The demolition of the existing bridge and installation of the new structure was completed in 36hours as per the programme and time constraints. The track was relaid and trains were running as normal.

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