Emergency personnel said they transported a male individual to the OKEU Hospital after three vehicles collided near the Castries Comprehensive Secondary School (CCSS) Tuesday morning.
A Saint Lucia Fire Service (SLFS) official said the patient appeared to have sustained minor injuries.
The SLFS said it received a call for assistance about 10:14 am.
Videos on social media showed a vehicle that had crashed into the median barrier along the highway.
There are no further details at present.