DALLAS (CBSDFW.COM) – A traffic headache Thursday morning after a semi tractor-trailer overturned in the Dallas Mixmaster.

The big rig flipped on its side after a crash with a passenger vehicle.

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(credit: CBSDFW.COM)

The accident happened around 5:00 a.m. and blocked the ramp from westbound Interstate-30 to southbound Interstate-35E.

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Dallas County Sheriff’s haven’t said if anyone was injured in the crash.

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Two heavy-duty tow trucks arrived at the scene around 6:15 a.m., but the overturned 18-wheeler wasn’t fully cleared until after morning rush hour.