Major Traffic Incident Closes I-35 Lower Levels in Downtown San Antonio

San Antonio, TX, September 4, 2026 —

The lower levels of Interstate 35 (I-35) in downtown San Antonio have been closed due to a major traffic incident. The nature of the incident was not immediately specified.

Authorities have confirmed the closure affecting a significant stretch of the highway in the city center. The exact timeline for the reopening of the I-35 lower levels remains undetermined. Commuters are advised to seek alternative routes and expect significant delays in the downtown area.

Further details regarding the cause of the incident, the extent of the disruption, and any detours in place were not provided in the initial reports. Information regarding the agencies responding to the incident or any official statements from transportation officials was also not immediately available.

Motorists are encouraged to monitor local traffic updates for the latest information on the situation and potential rerouting. The closure is expected to have a considerable impact on daily commutes and local traffic flow. The contractor involved in any potential repair or investigation has not been named.

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