By Ken MacLeod

WESTON (CBS) – A tractor-trailer fire shut down part of the Mass Pike Wednesday night. The eastbound lanes near the Weston-Natick line were closed as firefighters battled the raging fire.

First responders found the trailer of the truck fully engulfed in the eastbound breakdown lane at about 9:30 p.m. The tractor part of the truck was able to drive away from the trailer.

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The massive flames forced State Police to shut down the eastbound lanes almost immediately and that would cause traffic to back up for miles.

Drivers who passed by in the westbound lanes told WBZ they could feel the intense heat when they rolled down their windows.

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At several points, firefighters just had to stand back and let the truck burn, first because they feared the diesel tanks would explode and then because the flames were just so monstrous. It was safer to simply let the fire burn itself out.

During that time, they found a hydrant on a road adjacent to the Pike and ran a hose through the woods to reach the scene. A large area of brush was also burning at one point.

The flames were knocked down more than an hour later.

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There are no reports of any injuries and it is unclear what caused the fire.

Ken MacLeod