Dallas North Tollway 18-Wheeler Crash Spills 170 Gallons of Fuel

What happened

A Dallas North Tollway 18-wheeler crash shut down a busy part of Dallas on Friday, Sept. 25, 2026. It happened shortly after 11 a.m. on the Dallas North Tollway (DNT) near Northwest Highway.

Six vehicles were involved, including one 18-wheeler. The big rig rolled onto its side. Three people were taken to a hospital in stable condition, according to Dallas Fire-Rescue spokesman Jason Evans.

The truck's saddle tanks (the fuel tanks on the sides of the tractor) broke open. About 170 gallons of fuel spilled onto the road. Dallas Fire-Rescue sent its HazMat team, the crew that handles dangerous spills.

All southbound lanes of the tollway were closed between Walnut Hill Lane and Northwest Highway. The northbound lanes were also closed while crews worked. The exit was moved back to Royal Lane. The North Texas Tollway Authority told drivers to expect heavy traffic and avoid the area.

The reports we read did not say what caused the crash. We will not guess.

What it means for owner-operators

Nobody plans a rollover. But this crash shows how one bad moment can grow into many costs at once.

First, there are the people. Three people went to the hospital. When other vehicles are involved, the trucking company can face injury claims. That is what auto liability insurance is for.

Second, there is the fuel. A spill of about 170 gallons brings a HazMat crew and a cleanup. Cleanup of fuel or cargo spills can be expensive. Not every policy handles spills the same way. Some policies limit or leave out pollution cleanup. It is worth knowing what yours says before you need it.

Third, there is the truck and the load. A tractor on its side needs a heavy tow. The truck may be out of work for a long time. Physical damage coverage helps with your own truck, and cargo coverage helps with the load. Each one has its own rules and deductible.

Crashes in big cities like Dallas, Houston or San Antonio also block traffic for hours. That means more people, more cars and more chances for a claim.

What to do next

• Keep a safe following distance, especially on busy tollways and in city traffic.
• Check your saddle tanks, straps and caps in your pre-trip inspection.
• Keep your emergency kit ready: triangles, fire extinguisher, gloves and your insurance card.
• After any crash, call 911 first. Take photos, get names of witnesses and report it to your insurer as soon as you can.
• Read your policy for pollution and spill cleanup, towing and cargo limits. Our guide to trucking insurance coverage explained shows the main types in plain words.

Want someone to review your coverage with you? Call TCZ Insurance Agency at 956-526-6727.