An overturned 18-wheeler shut down a major North Texas highway for more than 12 hours overnight.

What we know: The accident involving an overturned 18-wheeler happened around 7:30 p.m. on Thursday on the westbound side of Interstate 30 in Royse City near the Buc'ees.

Big picture view: Royse City police said both westbound lanes of the freeway are still shut down, and one eastbound lane is also closed.