North bound road users are facing delays on the M11 South of Arklow, following a serious single vehicle collision overnight.
The Motorway has been closed between junction 21 Gorey and junction 22 for South Arklow.
Motorists are being diverted off the motorway onto the old N11.
Gardai in Gorey say the road will remain closed for the next few hours.
No details of any Injuries are being released at this stage.