Semi plunges off I-10 E at TX-99 after multi-vehicle crash

A semi truck cab went over the side of Interstate 10 East near TX-99 North on Thursday, July 23, 2026, around 12:51 PM, after a multi-vehicle collision brought traffic to a standstill in Harris County.

Responding officers found the big rig had plunged from the elevated freeway, creating a major incident that tied up all eastbound lanes and triggered extensive delays across the corridor. The crash left the roadway partially blocked while crews worked to recover the vehicle and clear debris.

This location has a troubling history. According to TxDOT CRIS public crash records, the Interstate 10 East and TX-99 corridor has recorded 1,775 crashes since January 2020, including four fatalities. Contributing factors as recorded by the investigating officer, per TxDOT CRIS, show "Failed To Control Speed" as the leading factor, cited in 619 crashes at this location over that same period. The hit-and-run rate at the corridor stands at 8.3 percent.

Thursday's afternoon incident added to the strain on a freeway that consistently sees heavy traffic during peak hours. Harris County reported 17,662 incidents over the previous 30 days, with 39 fatalities countywide—underscoring the intensity of traffic across the region.

Weather at the time of the crash was overcast and 89 degrees—conditions that, while not severe, can still affect vehicle control and response times on a freeway moving at highway speeds.

Crew recovery operations were ongoing as of the last update. Drivers heading eastbound on I-10 through this stretch were advised to seek alternate routes and allow extra time. The Texas Department of Transportation was coordinating with responding agencies to clear the roadway and restore normal traffic flow. Check real-time traffic conditions before heading through the area.