The Irish government is set to announce substantial new funding for cross-border projects later.
The cabinet in Dublin will meet to approve the plans, which will include the restoration of the £400m funding promise for the A5.
Highly anticipated funding for Casement Park in west Belfast is also set to be announced, thought to be in the tens of millions.
Taoiseach (Irish Prime Minister) Leo Varadkar, along with his partners in government, Tánaiste (Deputy Prime Minister) Micheál Martin and Green Party leader Eamon Ryan are expected to address the media at lunchtime.
It is anticipated that the funding announcements will include some updates on already announced projects, as well as new funding in education, health and infrastructure, including the Narrow Water Bridge Project.
The BBC confirmed on Monday that the A5 road from Dublin to Londonderry would have the full funding once promised, now restored in its entirety.
Expectations were raised when it was put to the taoiseach a week ago that the government should provide more funding.
Speaking in the Dáil (Irish lower house of parliament), Mr Varadkar said more funding to help complete the major upgrade would now be considered after it was significantly reduced during the financial crash.
The announcements today are part of the Shared Island Project founded by Mr Martin when he was taoiseach in the coalition government in 2020.
The Programme for Government and revised National Development Plan (2021-2030) announced by the Irish government both include substantial all-island investment.
The total all-island investment commitment is more than €3.5bn (£3bn) by 2030, through the government’s Shared Island Fund; Project Ireland 2040 funds; resourcing for North/South cooperation; and the PEACEPLUS programme, delivered with the European Union, UK Government and Northern Ireland Executive.
