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SAN ANTONIO, Bexar County, Texas, Oct. 6, 2026 — A crash involving an 18-wheeler and four other vehicles blocked lanes on Interstate 10 West at La Cantera Parkway Monday morning, October 5, San Antonio police said.
The five-vehicle wreck happened along I-10 West near the La Cantera Parkway interchange. At least one driver was taken by ambulance to a hospital.
Officers stayed at the scene to investigate as traffic backed up behind the crash site. Delays of up to an hour were reported by around 8:15 a.m., with drivers urged to seek alternate routes.
We hope everyone who was hurt makes a full and speedy recovery.
When Highway Crashes Involving Large Trucks Are Most Likely to Happen
Crashes involving 18-wheelers on interstates tend to cluster around the morning and evening commute, when passenger cars and heavy trucks share the same lanes at the highest volumes. Merge points, interchange ramps and parkway crossings like the kind found along I-10 add extra lane changes right when traffic is heaviest, raising the chance that a truck's long stopping distance turns a routine slowdown into a chain-reaction crash.
Early morning hours carry their own risks. Truck drivers may be several hours into a long haul, visibility can still be low even after sunrise in some seasons, and commuter traffic is moving fast while merging in and out around slower-moving freight. Fatigue and the mismatch in speed between accelerating commuters and trucks holding a steady pace both play a role.
According to the National Highway Traffic Safety Administration, 4 percent of large-truck drivers involved in fatal crashes had blood alcohol concentrations of .08 g/dL or higher in 2023. That figure points to the fact that most serious truck crashes stem from causes other than alcohol, including traffic volume, following distance and visibility conditions tied to the time of day.
Frequently Asked Questions
Why are crashes with large trucks often more serious than crashes between passenger cars?
A loaded 18-wheeler can weigh twenty times as much as a sedan, and that size difference means more force is transferred to the smaller vehicle. Stopping distances for trucks are also much longer, which can turn sudden slowdowns into multi-vehicle pileups.
What are a truck's blind spots, and why do they matter?
Large trucks have wide blind spots along both sides, directly behind the trailer, and close in front of the cab. Drivers in cars are often urged to avoid lingering in these zones, since the truck driver may not be able to see them at all.
What is an underride crash?
An underride crash happens when a smaller vehicle slides partly or fully beneath a truck's trailer, usually in a rear-end or side-impact collision. These crashes can be especially severe because the car's safety structure is not built to absorb an impact at that height.
What typically causes large-truck accidents?
Common factors include driver fatigue, following too closely, distracted driving, equipment failure and difficult merges in heavy traffic. Weather and congestion, like that reported at the La Cantera Parkway interchange, can also contribute.
What to Do After a Truck Crash in San Antonio, TX
If you're involved in or witness a crash involving a large truck, move to a safe location away from traffic if possible and call 911 right away. Even if injuries seem minor at first, it's worth getting checked by a medical provider, since some injuries from a truck collision aren't obvious until hours or days later.
Take photos of the scene if it's safe to do so, and get the names and contact information of any other drivers or witnesses. Ask responding officers how to obtain a copy of the official crash report once it's filed, since that document can be useful for insurance and medical follow-up. Give yourself time to recover and lean on local medical and support resources in San Antonio as needed.
