The M50 northbound will be closed for a number of hours after a very serious crash with Friday rush-hour delays already building.
Multiple ambulances, fire brigades and gardai are at the scene at the moment with a number of people believed to be injured.
Officers have said the road will remain closed for much of this evening and are asking drivers to avoid the area if at all possible.
A garda spokesperson said: "Gardaí are currently at the scene of a serious road traffic collision on the M50 Northbound. The road is currently closed between junctions 9 and 7 northbound with diversions in place. Gardaí are encouraging all road users to avoid the area if possible.
"Gardaí are also encouraging all road users on the N7 Northbound to try and avoid the area or take alternative routes if possible."
Traffic is now building right around the city as thousands head away for the bank holiday weekend - we will have all the very latest updates on this crash and the traffic delays as a result in our live blog here.
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