Joanne Rathe / Globe Staff
A tractor-trailer hauling sheetrock rolled over on the I-95 southbound ramp in Woburn around 8 a.m. today, snarling traffic at a key interchange north of Boston.
The cleanup was finished by 9:50 a.m. today and all lanes on the interchange between I-95 and I-93 have been reopened, State Police said.
State Police said no one was injured. The cause of the crash remains under investigation.
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