Tractor-trailer jackknifes on Pa. Turnpike, causes major traffic backups

A multi-vehicle crash caused major backups on the Pennsylvania Turnpike near Monroeville Thursday afternoon.

According to PennDOT, a tractor-trailer jackknifed and was leaking fuel at mile marker 58.3 eastbound.

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Traffic was backed up for several miles.

According to a tweet from Allegheny County, at least one person was injured.