A tractor-trailer rollover and fire closed both sides of Interstate 84 in Southbury and Newtown Tuesday morning.
State police said a tractor-trailer that was carrying lumber caught fire and dumped wood all over the highway.
According to troopers, both sides of the highway in Newtown and Southbury were closed from exits 11 through 14.
The westbound lanes reopened just before 2 p.m. The eastbound lanes opened around 5:30 p.m.
No injuries have been reported.
The state Dept. of Energy and Environmental Protection was called to the scene due to a diesel spill, state police added.