Southwest ISD school bus collides with 18-wheeler near Loop 1604 and Highway 90 in San Antonio

What happened

A Southwest Independent School District school bus carrying about 20 students was involved in a crash on San Antonio’s Far West Side at the intersection of Loop 1604 and U.S. Highway 90. Emergency responders reported no life-threatening injuries at the scene, though several occupants were evaluated and some were transported for additional medical assessment.

The collision involved the school bus and a tractor-trailer hauling gravel. The crash was reported in the afternoon, prompting a multi-agency response that included San Antonio Fire Department units and San Antonio police investigators.

Injuries and immediate response

Officials reported that multiple students and the bus driver were taken to area hospitals with injuries described as minor, while other students were assessed on scene and later released to parents or guardians. The district later confirmed that most of those transported were released after evaluation, with one student remaining hospitalized in stable condition at the time of the update.

• Approximate number of students on board: about 20
• Reported severity: no major or life-threatening injuries
• Medical actions: evaluations on scene; several transported for further checks

What investigators have said so far

Police investigators attributed fault to the tractor-trailer driver, citing a failure to obey traffic control at the intersection. Authorities did not confirm whether speed was a factor in the collision. No criminal charge details were publicly confirmed in the initial reporting.

Emergency officials emphasized that injuries were not considered major, despite the size of the vehicles involved and the scale of the response.

Traffic and operational impacts

The crash disrupted traffic near one of the region’s busiest highway interchanges, where Loop 1604 and U.S. 90 carry heavy commuter and commercial vehicle volumes. Lane restrictions and a visible emergency presence were reported during the response and investigation, with delays expected while crews worked to secure the scene and clear damaged vehicles.

Why school bus crashes are handled differently

School bus collisions trigger a standardized response that prioritizes medical triage for children, rapid reunification with families, and scene stabilization for investigation. In cases involving commercial trucks, investigators also examine traffic control compliance and operational factors related to heavy vehicles, including stopping distance and vehicle positioning.

The district’s student transportation operations and the agencies involved continued to focus on medical follow-up and the investigation’s findings as additional details become available.