A major wreck brought the Southwest Freeway outbound to a halt at the Chimney Rock entrance ramp around 6:19 AM on Sunday, September 20, disrupting early-morning travel in Harris County.
Responding officers worked the debris and towed disabled vehicles from the roadway. The incident cleared after about an hour, restoring flow to the freeway.
This location has logged 45 incidents over the past 30 days, with 22 of them major wrecks, according to LocalTrafficAccidents.com data. The corridor's recent activity underscores a broader pattern: over the past 90 days, this stretch has recorded 169 total incidents, including 80 major crashes and 4 fatals. In the past 12 months, the location has seen 527 crashes overall—283 classified as major—and 5 fatalities.
State crash records from the Texas Department of Transportation show 2,778 crashes within about a quarter-mile of this location since January 2020. Contributing factors as recorded by the investigating officer, per TxDOT CRIS, show "Failed To Control Speed" as the leading factor, cited in 1,137 crashes at the location.
Conditions were clear at the time—broken clouds and 75 degrees—which presented no weather-related hazard. The morning hour on a Sunday typically falls outside the corridor's heaviest crash periods. LTA data indicates most crashes here fall outside weekday commute peaks, with the single busiest hour occurring between 2 and 3 PM, when the location has logged 13 crashes.
Drivers should remain alert on this stretch. Early Sunday mornings may be quieter than weekday rush hours, but the data shows incident risk persists across all times and days of the week at this location.
Sources: TxDOT Crash Records Information System and Local Traffic Accidents database. Counts through September 20, 2026.
SOUTHWEST FWY OB @ CHIMNEY ROCK ENTR RAMP
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.