A vehicle collision with injuries occurred at I-45 South and Griggs Road at 3:58 AM on Sunday, May 03, 2026, in Harris County.
The crash marks the latest incident at a freeway corridor experiencing an extreme concentration of collisions. According to LocalTrafficAccidents.com data, I-45 South at Griggs Road has recorded 31 incidents over the past 30 days, with 23 classified as major. Over the past 90 days, the location has seen 101 total incidents, including 65 major crashes and 3 fatalities.
The early-morning incident occurred during an off-peak period, though historical data shows this corridor does not follow typical rush-hour patterns. LTA analysis of 90-day incident records indicates that 37 percent of crashes at this location occur during traditional rush hours, while the dominant pattern skews toward off-peak collisions. Thursdays represent the highest-incident day at this intersection, with 15 crashes documented over 90 days. The single most dangerous hour on the corridor is 4 PM to 5 PM, which saw 12 incidents in the same window.
Weather conditions at the time of the collision were clear, with temperatures at 57 degrees Fahrenheit.
I-45 South at Griggs Road ranks among the highest-incident locations in Harris County. The county recorded 19,118 total traffic incidents over the past 30 days, including 38 fatalities. The Griggs Road corridor represents a distinct concentration within that broader county pattern.
The nature and extent of injuries from Sunday's collision were not immediately detailed in available incident data. Harris County emergency services responded to the scene.
For context, the LTA real-time incident database tracks 67,838 incidents across the 13-county Houston-Galveston region. TxDOT publishes crash data annually as the state's primary traffic safety resource. The extreme 30-day and 90-day incident counts at this location reflect patterns available only through continuous real-time monitoring.
The collision's impact on traffic flow and any temporary lane closures were not specified in preliminary incident data. Drivers traveling I-45 South in the early morning hours should remain alert at this location given the historical frequency of collisions, particularly during off-peak periods when visibility and driver attentiveness may vary.
No additional details regarding vehicles involved, contributing factors, or ongoing investigation status were available at the time of this report.
Crash counts at this location reached 30 in the 30 days before this incident.
117 more crashes at this location followed this incident. Major collisions accounted for 75 of those incidents.
Crash frequency has dropped at the location after this incident.
A handful of the crashes happened within a single week.
The combined before-and-after total places this location in the upper tier of county incident counts.
Counts reflect data through August 17, 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.