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IREDELL COUNTY, N.C. -- A tractor-trailer accident caused major delays on Interstate 77 in Iredell County Friday afternoon.

Emergency crews said a tractor-trailer going south on I-77 went through the median and into the woods late Friday afternoon. The accident is causing delays to all northbound lanes of I-77 at mile marker 72.

Traffic is backed up about four miles while crews work to clear the scene.

Emergency crews have not said if there are any injuries.

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