ANA President Michael McGrath said the agency had been granted permission to carry the work, after it was approved by the High Court last week.
Mr McGrath told RTÉ’s News at One: “This is an important milestone in the Irish Government’s response to the border situation.
The approval of this work is the beginning of a significant period of work to ensure the safety of the public.”
The work is being carried out in a manner that meets the high standards that the Irish High Court has given us, which are of the highest quality.
“He said the Agency had also received an order from the Garda Commissioner that the roadwork will be carried out on a voluntary basis, with the Government and the Gardai supporting the operation.
Mr O’Donnell said he hoped the Government would honour its commitment to the court.”
This is the first time that we’ve had a court order given to us,” he said.”
I think it’s great that they’re going to be making sure that this works in a voluntary way.
“An internal audit has also been completed by the Agency and its management.
Mr McNulty said the work will be completed “in a way that respects the High Commissioner’s orders”.
The Government has already granted an extension to the road work to give gardai the opportunity to carry on with the work.
Mr Donnelly said it was a good example of how a small Irish Government could “act with the utmost dignity”.
He added that it was important that the public could not be put at risk.
The Garda said that no people would be injured and that the work would be carried on “at the appropriate times and in a controlled manner”.