Multiple tractor-trailers are involved in a crash on Interstate 395 north in Montville on Wednesday.
State Department of Transportation officials said the truck accident involves three tractor-trailers and is on I-395 north between exits 6 and 9. The right lane is closed.
Authorities estimate the highway will reopen in four hours or less.
State police said there was a report of injuries, but the extent is unclear at this time.
The investigation is ongoing.