Motorists using the M7 this weekend will face long delays as a motorway bridge is to be demolished.
Traffic in both directions between Junction 9 and Junction 10 will be affected.
Diversions will be in place from 9pm on Friday, and traffic will return to normal at 6am on Monday.
A speed limit of 25km/h an hour will be in place at the roundabout on the new slip roads.
Gardai say the demolition of the bridge is necessary to facilitate the construction of the new Junction 9a near Nass.
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A statement said: "In order to safely carry out this demolition works and maintain M7 traffic in both directions, traffic will be directed around the area of the works via the newly constructed off/on slips of this new interchange.
"A cautionary speed limit of 25km/h will be in place through the new roundabouts.
"These demolition works will take place over the weekend of Saturday 30th & Sunday 31st March, 2019. Traffic will be directed onto the slips from 9pm on Friday 29th March.
"This arrangement will continue through the weekend with traffic running in two lanes on each carriageway during 06.00 - 22.00hrs each day."
