Interstate 95 southbound has reopened after it was closed between exits 5 and 4 in Greenwich when a tractor-trailer jackknifed early Tuesday morning.
The left lane was reopened about an hour later, but traffic in the area quickly started to build, and delays were reported all the way to exit 9.
The interstate was fully reopened around 8 a.m.
No injuries were reported.
The cause of the crash remains under investigation.
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