Major Crash Shuts Down I-35 South in Downtown San Antonio

SAN ANTONIO, TX – A major traffic incident has closed I-35 South near I-37 in downtown San Antonio on Friday, March 13, 2026, causing significant delays. Authorities are urging drivers to seek alternate routes.

Details of the Crash

According to the San Antonio Police Department, the crash involved three vehicles and one 18-wheeler . The incident occurred on I-35 South at the I-37 South exit.

Injuries Reported

Two drivers were transported to the hospital in critical condition, and two additional individuals were taken to a local hospital in serious condition .

Traffic Impact and Alternate Routes

I-35 South is currently closed near I-37. Motorists are advised to find alternate routes to avoid the area . Drivers can monitor traffic conditions using TransGuide cameras.

Other Incidents

A separate incident occurred earlier this week involving a fatality on I-35. A 27-year-old woman died after her car fell from the upper level of I-35 and San Pedro on Saturday morning .

Authorities are continuing to investigate the cause of the I-35 South crash. Further updates will be provided as they become available.