Transport 21

Transport 21 is an Irish infrastructure plan, announced in November 2005. It aims to greatly expand Ireland's transport network. A cost estimate of €34 billion was attached to the plan at the time.

The plan includes continuing investment in Ireland's road network, along with investment in public transport in the form of buses and rail.

A significant portion of this investment will focus on the creation of an integrated rail network in Dublin. Projects include a tunnel under Dublin city centre connecting Heuston Station with Pearse Station and Docklands station at Spencer Dock. This will facilitate the expansion of the Dublin Area Rapid Transit (DART) system from one line to two. Also included are several new Luas lines, a metro system, and tighter integration between all rail systems, particularly at the planned St. Stephen's Green interchange. This will create a single integrated rail network in Dublin that serves the north, south, east and west of the city.

Other rail investment includes the planned Western Railway Corridor, redevelopment of a rail link from Navan to Dublin and upgrading and extending suburban rail in Cork.

Also included in the plan is the significant expansion of the Dublin Bus passenger-carrying capacity, completion of the motorway system linking all the major urban centres on the island, and better integration of all transport systems.