If a long / medium term solution to this costs multiples tens of millions then we had better hope that the current economic condition doesn't deteriorate any further.
A full scale deviation involving a new tunnel is not a runner alas so unless these new remedial works solve the problem for another 5 years then there could be a problem.
For Greystones DART users and Gorey line commuters this is a complete nightmare
Are DART season tickets being accepted on DB services in the short term?
Are IE running their own buses in addition to regular DB services to help with deman?