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Sam Houston Toll southbound shut after major crash

September 16, 2026 at 06:42 AMBy Dennis R. Mundy, Executive Editor📍 Harris County

West Sam Houston Tollway southbound came to a stop Wednesday morning after a major crash at IH-10 Katy around 6:42 AM. The incident shut down lanes and backed traffic up significantly during the start of the commute.

Harris County emergency crews responded and cleared the roadway, but the early-morning timing hit commuters hard. If you're heading south on the Sam Houston Toll this morning, expect delays even as crews work to reopen lanes.

According to LocalTrafficAccidents.com data, this intersection has logged 5 major incidents in the past 30 days—all crashes. Over the last 12 months, the corridor has recorded 52 total incidents, with 51 classified as major. This is the second major crash at this location this week.

Alternate routes this morning: I-610 loop, Westpark Tollway to the west, or Washington Avenue and Memorial Drive for inner-loop segments. Check current conditions before you head out; delays may persist through the early-morning rush.

📍 Incident Location

West Sam Houston Tollway Southbound at IH-10 Katy

Harris County, Texas

How This Report Was Produced

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.

Read our full methodology →

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