A truck accident on Highway 6 closed three lanes of the freeway near F.M. 159 Tuesday evening.
An 18-wheeler traveling southbound jackknifed, crossing into oncoming traffic and colliding with another 18-wheeler.
The drivers of both trucks were taken by ambulance to area hospitals.
The driver of the jackknifed truck was taken with serious injuries.
Wind and rain are expected to be contributing factors in the cause of the accident.