HOPKINTON (CBS) — A serious crash involving two cars, a box truck, and two tractor-trailers left one person injured and was still causing delays hours after it happened Monday morning.

The crash happened just after 8 a.m. on the eastbound side of the Massachusetts Turnpike before Exit 11A on the Hopkinton-Westboro line.

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One of two tractor-trailers involved in the crash on the Mass. Pike in Hopkinton Monday morning. (WBZ-TV)

State Police warned commuters to expect delays, and said around 10:30 a.m. that traffic was backed up about ten miles, almost to route 122 near Worcester.

The vehicles involved were a tractor-trailer driven by a 54-year-old Pittsfield man, another driven by a 40-year-old Gloversville, New York man, a Hino box truck driven by a 31-year-old Belchertown man, a Chevy Terrain driven by a 32-year-old Worcester woman, and a Mitsubishi Lancer driven by a 32-year-old Agawam man.

Massachusetts State Police said the driver of one of the tractor-trailers was ejected during the crash. Nearly half of the truck’s cab was ripped off.

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(Image credit: MassDOT)

That driver was taken to UMass Memorial Medical Center in Worcester for treatment for non-life-threatening injuries, where State Police said later in the morning they were in stable condition.

The driver of the box truck was also taken to UMass Memorial with non-life-threatening injuries.

No other injuries were reported.

(Image credit: MassDOT)

The right and middle eastbound lanes were initially closed as a result of the crash, but were reopened early Monday afternoon.

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