Tunnels built in their own approaches

The Limerick Tunnel was constructed using the immersed tunnel technique in an 'in-line' casting basin or drydock within the footprint of the northern approach structures. The paper describes the benefits of this method of construction, the temporary works required to form the elements under challenging environmental conditions, namely poor ground conditions and a tidal river subject to large water level variation and strong currents.

Automated summary

The paper discusses the construction of the Limerick Tunnel using the immersed tunnel technique and the challenges faced due to poor ground conditions and tidal river currents.