In Ireland, the highest category of road is a Motorway (mótarbhealach, plural: mótarbhealaí), indicated by the prefix M followed by one or two digits. The Motorway network predominantly consists of two-lane dual carriageways primarily focused around Dublin, although a few Motorways contain three lanes and the M50 has four lanes at a number of points throughout its length. Completion of the Major Inter Urban route Motorway development project in December 2010 which connected Dublin completely by motorway to the cities of Cork, Limerick, Waterford & Galway, as well as other projects, has increased the total motorway network in the state to approximately . Planned new road construction will possibly lead to almost of motorway by 2015, but these plans are not funded.