The Taoiseach has described Ireland's new national development plan as "unprecedented in scale" and one that will shape Ireland's response to the housing crisis and the challenge of climate change.
The new plan, described by ministers on Monday as "gigantic", promises 165 billion euro in funding for a range of projects over a 10-year-period.
Taoiseach Micheál Martin said: "This is an important day in what has been an exhaustive and comprehensive review."
He added: "The plan gives clarity about Government investment over the next decade.
Mr Martin promised that the national development plan would "drive the next stage of our post-pandemic recovery".
He said that Ireland's revised development plan was the "largest and most environmentally conscious development plan in the history of the state".
"We will enable the transformation of our health service, delivering the investment framework necessary for the implementation of Slaintecare," he said.
He also announced fresh funding to support cross-border projects on the island of Ireland up to 2030.
The Taoiseach said the plan would deliver "regionally balanced growth" to the country.
In recent days focus has been on certain road projects, as well as whether there would be clarity in the plan on when the stalled Dublin MetroLink project might be completed.
The plan says that the completion date for the project, which will consist of a 19km railway service between Swords and Dublin city centre, still has to be confirmed.
Tanaiste Leo Varadkar said that significant progress had already been made on various projects, even against the backdrop of a pandemic.
"This isn't simply an updating of the last NDP. Rather, it's a strengthening of the plan," he said.
He said the plan would deliver new opportunities to rural Ireland.
"I think the pandemic has illustrated the real potential that rural Ireland has for the 21st century."
Earlier, the Minister for Public Expenditure and Reform said the government will "honour" its commitment to a two-to-one spending ratio on public transport to roads as part of its National Development Plan.
Michael McGrath said public transport needs "transformative change", which he said is provided for in the government's revised plan.
Mr McGrath said it will be the largest public capital investment programme in the history of the state in transport and housing.
It plans for transport projects worth 35 billion euro (£29.9 billion) up to the end of the decade.
Mr McGrath said: "There is a programme for government commitment, which was agreed to by the three parties on entering government last year, and that is that when it comes to new infrastructure investment in transport, there will be a ratio of two to one in favour of public transport investment, relative to investment in new road infrastructure.
"We are looking at a transport capital budget of 35 billion euro out to 2030, and there are a whole range of projects at different stages in the project development life cycle.
"What I want to see now is an element of competition, whereby all of those involved in promoting and sponsoring these projects get them through all those various stages to the point where they are ready to go."
He said the ratio still allows funding for road projects to be advanced.
"I mean, for example here we (have) Dunkettle Interchange being built in Cork, the N22 and other projects are in the pipeline, which will also be delivered," Mr McGrath added.