Originally Posted by comcor
I would say, let the Cork-Dublin platforms be built.
Then persuade Irish Rail that Waterford will definitely stay open and needs investment.
Then it may be possible to consider a short platform, linked to the Cork-bound platform, alongside the line to Waterford.
Others on here will know better the operational problems with stopping a train in a location where it is about to cross another track, but I would suspect that it would have to be stopped at the platform before any Cork-Dublin or Dublin-Cork services have pulled in. The Limerick bay doesn't suffer from this and it could be possible to put in a terminating platforn off the Waterford line, but that would preclude through running without manoeuvres.
Is there a way to use trains from Waterford as Limerick Junction to Limerick shuttle services without limiting journey options that are there now?
A train running from Limerick to Waterford connecting with a train going from Cork to Dublin, for example, would not let passengers coming from the Cork direction to travel to Limerick.
Would it work in this case to have another shuttle train that would go back to Limerick from Limerick Junction when the Waterford-bound one would arrive to keep the possibility of (in this case) a Cork to Limerick service?