An overturned tractor trailer closed Interstate 84 westbound in Danbury Wednesday.
All three lanes reopened in the 7 a.m. hour; however, the Department of Transportation and state police said the highway was still congested between exits 7 and 5.
The closure was between exits 6 and 5, according to the DOT.
No one was hurt.
Investigators are still looking for a cause.
State police predicted that the cleanup would last until mid-morning.
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