Dublin Port Tunnel

Case Study

Banagher Precast Concrete is one of the leading suppliers of lining systems to the Irish and UK tunnelling industry. Having successfully completed a major drainage project in Limerick, Banagher Precast Concrete was awarded the prestigious Dublin Port Tunnel contract. With a total value of over 450m Euro the contract is the largest of its type ever undertaken in the country. The tunnel comprises approximately 5.6 km of dual carriageway, which includes 2.1 km of twin cut & cover tunnels and 2.4 km of twin bored tunnels, with associated interchanges and infrastructure. The scheme follows a broad north-south path in its route from Santry to Dublin Port.

Banagher Precast Concrete was awarded the contract to produce the precast segments by Nishimatsu Mowlem Irishenco. The lining consists of 3,037 rings with an internal diameter of 10.84m and a thickness of 350mm. Each ring is made up of six segments, weighing 8 tonnes each, and one key segment weighing 2.3 tonnes.