The right lane on the westbound side of the Mass Pike in Palmer is open after a tractor trailer overturned and caught on fire.
The Massachusetts Department of Transportation said the left lane will stay closed through the early evening.
All eastbound lanes are open after being closed briefly.
Officials said the cab of the truck caught on fire and the blaze spread to a drain and the woodline. Blocks of cement rolled off the truck and onto the highway. There is no word on what caused the accident.
Massachusetts State Police said there were no injuries.
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