A major crash shut southbound lanes on IH-69 Southwest at Dunlavy around 12:22 AM on Friday, September 4, 2026, trapping drivers in a bottleneck on one of Harris County's most incident-prone stretches.
The southbound roadway was completely blocked as crews worked the scene. Southbound traffic backed up significantly while first responders cleared the wreckage and assessed the damage. Drivers heading south toward the airport or the Braeswood area faced substantial delays.
Your best alternatives right now: US-59 frontage roads offer a parallel route, or consider Hillcroft or Fondren for southwest segments if you're trying to bypass the area entirely. SH-288 southbound is another option if you're heading further south.
This crash is the latest in a string of incidents at this location. According to LocalTrafficAccidents.com data, IH-69 Southwest at Dunlavy has logged 28 major crashes over the past 12 months—a pattern that underscores just how congested and volatile this corridor remains. All six of the crashes recorded here in the past 30 days have been classified as major.
For perspective, Harris County recorded 17,095 incidents across all categories in the same 30-day window, with 17 of those fatal.
Expect the southbound lanes to remain affected until crews can clear the debris and complete their investigation. Check real-time traffic apps before you head out—alternate routes are moving, but they're carrying extra volume while the Southwest Freeway is restricted.
IH-69 Southwest Southbound at Dunlavy
Harris County, Texas
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.