The route and station plans for the new underground rail line from Heuston Station to Dublin’s Docklands, will be put on public display by Iarnród Éireann from tomorrow. The line, which the company is calling an “underground Dart”, will have just five stations along its 5.2km length, at Heuston, Christchurch, St Stephen’s Green, Pearse Street and Docklands. A spokesman for Iarnród Éireann said the company intends to apply for a railway order to build the underground line, which is a Transport 21 project, in autumn 2009 and hopes to complete the project in 2015. While he would not reveal the cost of the project, it has been estimated to be in the region of €2 billion. The line is one of the most important elements of Transport 21, Iarnród Éireann said, as it will connect a number of services.