Liffey Service Tunnel
Utility facility in Dublin, Ireland
From Wikipedia, the free encyclopedia
The Liffey Service Tunnel (Irish: Tollán Sheirbhísí na Life) is a service tunnel for various pipelines in Dublin, Ireland, owned by Dublin City Council.[1]
| River Liffey Service Tunnel | |
|---|---|
 Recovery of the TBM after tunnel completion | |
 Interactive map of River Liffey Service Tunnel | |
| Overview | |
| Location | Dublin, Ireland |
| Coordinates | 53°20′48″N 6°13′49″W |
| Operation | |
| Work began | 2006 |
| Constructed | Pipe Jacking |
| Opened | 2008 |
| Owner | Dublin City Council |
| Technical | |
| Length | 260 m (280 yd) |
| Tunnel clearance | 2.5 m (8 ft 2 in) ID |
Project
The tunnel was designed by British company Atkins[2] and constructed by a joint venture of the German contractor Züblin and the Irish contractor Cleary & Doyle of Wexford. Its construction took place from September 2006 until October 2008.[citation needed]
Tunnel design
The tunnel is 260 m (280 yd) long and consists of a single bore of diameter 2.96 m (9 ft 9 in). It was built in pipe-jacking using a Herrenknecht tunnel-boring machine and 2.5 m (8 ft 2 in)-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, approximately 150 m (160 yd) west of 3Arena. The drive and reception shafts are respectively 19 m (62 ft) and 22 m (72 ft) deep, leaving the tunnel passing approximately 8 m (26 ft) below the shipping channel of the river.[citation needed]
