A major crash on IH-45 Gulf southbound at Cullen brought traffic to a standstill Thursday morning at 10:13 AM on February 12, 2026. The incident, reported by TranStar, had significant impacts on one of Houston's busiest north-south corridors during the mid-morning period when commuter traffic typically begins to taper.
Drivers heading south on the Gulf Freeway should expect substantial delays extending well into the late morning. The backup has likely backed up traffic onto connecting roads including the feeder roads and nearby surface streets in the Sunnyside and Greens Bayou areas. Those looking to avoid the gridlock should consider diverting to Loop 610 East, which offers access to eastbound routes, or using surface streets like Broadway or Telephone Road to bypass the affected stretch entirely. For drivers with flexibility, waiting until early afternoon would be the safer option before attempting passage through this corridor.
This stretch of IH-45 Gulf near Cullen has long been a challenging section for Houston commuters. The area sits in a transitional zone between the Sunnyside neighborhood and industrial areas, with heavy truck traffic mixing with passenger vehicles throughout the day. The roadway regularly experiences congestion during peak hours, and incidents here tend to cascade quickly given the volume of traffic funneling through relatively tight merges and lane configurations.
The southbound direction bore the brunt of this incident's impact. As of mid-morning, the crash remained active with cleanup and investigation underway. Drivers should watch for emergency vehicles and potential lane restrictions as crews work to clear the roadway. Anyone traveling through Harris County on the Gulf Freeway should add significant buffer time to their commute and monitor traffic updates regularly until the scene is fully cleared.
In the 30 days before this crash, 3 incidents had already been recorded at this location.
In the days and weeks following this crash, the location recorded 27 more incidents. 18 of the subsequent crashes were classified as major.
The location has logged crashes at a higher rate after this one.
Some of those crashes occurred within days of each other.
That combined total ranks the location high among county incident sites.
Reflecting incident data through May 11, 2026.
This report was produced by LTA's editor-designed production system under the executive editorial direction of Dennis R. Mundy, Executive Editor. The system combines our proprietary data pipeline with AI-assisted drafting to deliver verified incident coverage to LTA's editorial standards.