Sinn Féin vice president and Mid Ulster MLA Michelle O’Neill has called for the upgrade of the A5 road to be a "shared priority" between the Irish government and Stormont.
The call comes after a meeting between O’Neill and Taoiseach Leo Varadkar last week.
The Irish government had initially pledged to provide £400million towards the cost of the delayed project before the figure was reduced to £75million following the financial crisis which hit the country after 2008.
