We are proposing a tunnel to go under the Menai Strait. Coming to this decision and establishing how we will overcome the technical challenges of crossing the Strait has taken a lot of work.
We’ve looked at the setting of communities, the landscape and important features such as Bryn Celli Ddu, Plas Newydd and the Vaynol Estate. We have also considered the wildlife and marine environment and the feedback we have had about the area.
We have needed to consider a number of practical issues such as the geology, how deep we would have to go, and the space we would need for drilling or tunnelling equipment.
We’ve also had to think about the effects of any above ground infrastructure. This included routeing an overhead line to the area, the sites for sealing end compounds which we need to change from overhead to underground and tunnel head houses. Temporary construction areas and traffic access were further important considerations.
Cost was a further consideration as any money we spend is passed on to all of us through our electricity bills.
All this has influenced the technology we will use to make the crossing, the location of equipment and where is most suitable to actually cross.
(Click image to enlarge)