Project first mooted in 2001 report
THE idea of a metro from the city centre to Dublin Airport was originally referred to in the city transportation office's 'Platform for Change' document in 2001.
The project has divided political and public opinion as cost estimates swung wildly between €2.5bn and €4bn.
The proposed route of Metro North covers 16.5km and has 14 stops between Swords and the city centre.
These stops were due to be located at St Stephen's Green, O'Connell Bridge, Parnell Square, Mater Hospital, Drumcondra, Griffith Avenue, Dublin City University, Ballymun, Northwood, Dardistown, Dublin Airport, Fosterstown, Swords, and Estuary.
All of the planning and preparatory work has been completed, including underground tests and the property purchases.
But, crucially, no construction work has started as the contract has not received Government approval.
The project was pushed hard by former Transport Minister Noel Dempsey.
But in April his successor, Leo Varadkar, said that Metro North and the DART underground were unlikely to go ahead.
He later said the Government was carrying out a "comprehensive spending review" and hoped to have a decision after the review concludes in September.