LITTLETON, Mass. — A rollover crash involving a tractor-trailer caused traffic backups and littered a Massachusetts off-ramp with debris during the evening commute on Thursday.
Aerial images showed the rollover crash near exit 79 on I-495 North in Littleton littered the grassy area near the off-ramp with debris.
It was not immediately clear what the vehicle was carrying.
Several emergency vehicles responded to the crash and worked to right the trailer.
The off-ramp is closed while the crash is cleaned up.
In #Littleton, I-495 NB exit 79 closed due to rollover.
— Mass. Transportation (@MassDOT) September 4, 2025
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