The final bottleneck on the road connecting the three biggest cities in the country will be eradicated in the Government's new capital investment plan, with an upgrade of the N7 Naas dual carriageway.
The €27bn programme will also see the Rotunda Maternity Hospital moved to west Dublin.
The homelessness crisis will be tackled through €600m being put into social housing.
The Government's 'Building for Recovery' plan also promises to create 45,000 jobs.
These are among the main elements of the Coalition's final long-term spending plan before the General Election. One of the larger components is a €110m upgrade of the N7 Naas dual carriageway. This would allow traffic to freely flow from Cork, Waterford and Carlow to Belfast via Dublin.
The relocation of the Rotunda to Blanchardstown will be seen as a major coup for Health Minister Leo Varadkar and Tánaiste Joan Burton because it will be in their constituency.
Justice Minister Frances Fitzgerald has secured more than €200m for a new garda IT system, as well as funding for station refurbishments.
A €1bn flood defence plan is also proposed for some 300 at-risk areas across the country. This will run over 10 years.
Writing in today's Irish Independent, Public Expenditure Minister Brendan Howlin said the plan aims to ensure "every part of the country benefits" and not just Dublin.