Location Dublin, Ireland Constructed Pipe Jacking Tunnel clearance 2.5m ID | Work begun 2007 Length 260m Owner Dublin City Council | |
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The Liffey Service Tunnel is a service tunnel for various pipelines in Dublin, Ireland, owned by Dublin City Council.
Contents
The tunnel was designed by Atkins and constructed by a Joint Venture of the German Contractor Ed. Züblin AG, Stuttgart and the Irish Contractor Cleary & Doyle Contracting Ltd., Wexford. Construction period was from September 2006 until October 2008.
Floor Access Covers by Surespan Ltd - The Liffey Service Tunnel contains many floor covers providing access to maintenance areas below. These were supplied by link Surespan Ltd in the UK and contain cobbled stone infill as well as various sized covers with chequerplate lids rated to FACTA Class A, pedestrian loading.
Tunnel specifications
Tunnel design
The tunnel is built in pipe-jacking using a Herrenknecht tunnel boring machine (TBM) and 2.5m long precast reinforced concrete pipes. The tunnel leads from the southern edge of the East Link Bridge, underneath the River Liffey towards the North Quay Wall, approx. 150m west of The Point Theatre. The drive and reception shafts are resp. 19 and 22m deep, leaving the tunnel passing approx. 8m below the shipping channel of the river.