A box truck that rolled over inside the O'Neil Tunnel on Interstate 93 northbound in Boston is causing problems for the Friday morning commute.
At one point, the truck was blocking three lanes of traffic prior to exit 23.
By about 6:30 a.m., the truck was being towed away and two lanes of traffic inside the tunnel were getting by the crash scene.
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Massachusetts State Police said delays on the northbound side of I-93 of about 2 miles were being reported.
It's unclear how the truck rolled over.
Police said there were no injuries.