Rayford Washington, 38, was booked into the Williamson County Jail on one count of driving while intoxicated with a child younger than 15, a state jail felony, according to DPS.
Investigators say Washington was driving west on Chandler Road when he tried to turn left onto the southbound Texas 130 frontage road and collided with the truck, which was traveling east. The truck struck the bridge barrier and fell off the overpass onto the southbound main lanes of Texas 130. The driver, 59-year-old Eric Fields, died at the scene.
After the crash, Washington and two children in the Audi, ages 5 and 9, were taken to a hospital for evaluation. All southbound lanes of the highway were closed for several hours Monday as investigators remained on scene.
DPS said the investigation remains ongoing.