The Government has unveiled its €27bn capital spending plan, which it says will create 45,000 construction jobs.
The plan includes a series of new road and schools programmes, as well as the construction of a new Metro North rail line.
However the link connecting Dublin Airport with the city centre will not be completed until at least 2026.
The money for the capital investment plan will be spent over the next six years on transport, housing, health, education and flood defences.
A revised Metro from Dublin City Centre to the airport and Swords is the centrepiece of the plan.
It will run between Dublin city centre and Swords, via Ballymun and Dublin Airport.
The rail link is included in the roads programme (listed below) which is going to cost around €6bn, with €4.4bn of that going to essential maintenance.
The proposed route for the rail link will include a stop at Dublin City University, which welcomed the news.
The plan also includes:
The Connolly to Maynooth line upgraded to full DART service;
The Phoenix Park Tunnel upgraded and opened to commuter trains in 2016;
The Cross City LUAS to Broombridge in Cabra to come on stream in 2017;
Significant funding for new and replacement buses, further upgrading of Quality Bus Corridors, and road maintenance;
An additional €100m available to fund the relocation of the remaining two Dublin maternity hospitals - the Coombe to St James’s, and the Rotunda to Blanchardstown
Among the road projects will be:
The N7 Naas - Newbridge road widening;
The Sallins bypass;
The Dunkettle Interchange;
The Ballyvourney to Macroom N22 road;
The N4 to Castlebaldwin;
The N5 Westport to Turlough;
A new bridge over the Garavogue River in Sligo;
Subject to planning permission:
The Slane bypass;
The N28 Cork to Ringaskiddy road;
The Mallow relief road;
The Adare bypass;
There are three PPP projects:
The N17/N18 Gort to Tuam road is already underway;
The M11 Gorey to Enniscorthy;
The N25 New Ross bypass.
Tom Parlon, Director General of the Construction Industry Federation said: “We welcome the level of investment announced today by Minsters Howlin and Donohoe, particularly the regional distribution of these infrastructural projects across the country.
"While the quality of infrastructure in Ireland has been improving, we still lag behind the OECD average, dropping 4 places to 24th in 2015. Further investment in water treatment, commuter rail, and residential construction will ensure our competitiveness on a global scale.
"The undertakings announced today will need to be accompanied by a detailed breakdown of the planned investment programme per region, and concrete timeframes to provide the certainty that the construction industry now requires."
Dr Declan Raftery, Chief Operations Officer at DCU, talking about the Metro North Rail link said: "This long-anticipated investment will transform connectivity to and from DCU which is very welcome news for the university’s large and growing student and staff population, which will exceed 18,000 by September 2016, as the university significantly increases its geographical footprint in the north Dublin region to include the DCU St Patrick’s Campus and the recently purchased All Hallows Campus in Drumcondra.
"This new infrastructure will be a real boost to the North Dublin region and will allow DCU to realise its vision of driving social and economic development through partnership with local authorities, enterprise and community organisations."