18-Wheeler Wrecks
Jackknifed 18-Wheeler Shuts Down I-35 Near Loop 1604 in Von Ormy

This commentary is based on local news reporting. For complete details about this incident, please read the original article linked below. The information provided here is for educational purposes and does not constitute legal advice.
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This commentary is based on reporting from My San Antonio. Click below to read the complete original article.
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A jackknifed 18-wheeler carrying car parts shut down I-35 near Loop 1604 in the Von Ormy area late Friday morning, September 18, 2026.
Von Ormy Police said the crash occurred shortly before 10:00 a.m. The tractor-trailer jackknifed across the highway, forcing traffic off the main lanes while police, Bexar County Fire, and other crews responded. No injuries were reported.
Traffic became heavily backed up, with vehicles reportedly moving as slowly as 1 mph and congestion extending toward Luckey Road.
I-35 Closed After 18-Wheeler Jackknifes Near Loop 1604
Von Ormy Police reported that southbound I-35 was completely shut down and traffic was being forced onto the frontage road while crews worked to remove the commercial truck.
The crash occurred as storms were moving into the San Antonio area, but authorities had not determined what caused the 18-wheeler to jackknife. Wet weather alone does not establish the cause of a commercial truck crash.
What Can Cause an 18-Wheeler to Jackknife?
A jackknife occurs when the trailer swings out at an angle to the tractor. Several different circumstances can contribute to this type of crash.
Depending on the facts, investigators may examine:
braking immediately before the trailer swung outward;
vehicle speed and roadway conditions;
loss of traction;
sudden steering or evasive maneuvers;
brake or tire condition;
cargo weight and distribution;
whether the driver was following traffic too closely; and
whether another vehicle contributed to the event.
The fact that an 18-wheeler jackknifed does not by itself establish that the truck driver or motor carrier was negligent.
Cargo and Truck Data May Help Explain the Crash
Police reported that the trailer was loaded with car parts.
In a serious jackknife crash, investigators may examine not only the driver's conduct but also how the trailer was loaded and whether the cargo affected the truck's handling.
Potential evidence may include:
electronic control module or “black box” data;
dashcam and onboard camera footage;
GPS and telematics records;
electronic logging device information;
brake and tire inspection records;
tractor and trailer maintenance records;
bills of lading;
cargo weight and loading records;
dispatch communications; and
photographs and measurements from the scene.
Some of this evidence may be held by the motor carrier, tractor owner, trailer owner, shipper, loading company, or maintenance provider.
Other Recent I-35 18-Wheeler Crashes in San Antonio
The Wooley Law Firm has reported on several other commercial truck crashes along I-35 in the San Antonio area, including an 18-wheeler crash in an I-35 construction zone and a separate I-35 truck wreck that shut down the lower level near downtown San Antonio. These were separate incidents and are not known to be related to Friday's crash.
Injured in an I-35 18-Wheeler Wreck in Texas?
The Wooley Law Firm represents people injured in serious 18-wheeler and commercial truck crashes throughout Texas.
A truck wreck investigation may include preserving electronic truck data, driver records, maintenance documents, cargo information, onboard video, and other evidence that can help determine why the collision occurred.
For more information, visit our Dallas 18-wheeler accident lawyer page.
Call The Wooley Law Firm at (214) 699-6524 for a free consultation. You don't pay unless we win.
Disclaimer
This article is based on preliminary information concerning a developing September 18, 2026 commercial truck crash. Additional or different facts may become available. Nothing in this article is intended to assign fault to the truck driver, motor carrier, cargo company, or any other person or business before the investigation is complete.
This article is for general informational purposes only and is not legal advice. Reading it does not create an attorney-client relationship.
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