A section of the M20 motorway, between Limerick and Adare, is fully closed due to a serious road traffic collision.
The incident occurred shortly before 3pm.
Sources said emergency services responded to single vehicle collision, in which a car went into a rolling spin and crashed.
Gardai, ambulance, and several units from Limerick City and County Fire Service, are at the scene.
Transport Infrastructure Ireland (TII) said there was a “full road closure” after a collision had occurred between Junction 3 Raheen and Junction 2 Dooradoyle (North).
A source said emergency services received an alert at 2.54pm of a “one-car rollover”.
Another source said one person had to be cut from the wreckage by emergency first responders, and that the car involved was discovered on its side.
A woman in her early 20s was taken by ambulance from the scene to University Hospital Limerick.
It’s understood her injuries are not life threatening.