Commuters are facing traffic delays into the summer due to work on the €120 million M7 Dublin Limerick motorway widening project falling behind the original completion date.
It had been planned to finish the widening work along a Naas to Newbridge section of the route by April.
Transport Infrastructure Ireland had said in January that the project was still on schedule. However, Kildare County Council has indicated that it will not be completed on time.
Mr Niall Morrissey told Newstalk that the project would probably finish by the end of July.
The scheme involves widening of 13.5km of the M7 motorway from two to three lanes. Once completed it is hoped the work will have a significant impact on motorists from both a safety and reduced travel time perspective.
The contract was awarded to SIAC/Colas JV in September 2017.
An estimated 70,000 vehicles using the route on a daily basis. It is the main network connection to M9/Waterford, M8/Cork and M7/Limerick.
There is no official statement on the M7 project website.
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