The rollover accident was in the area of 600 W. Putnam Ave., the fire department said via Twitter. Delays were continuing on that side of town after 4:30 p.m. Tuesday, officials said.
It was not clear how long it would take to clear the scene of the crash, which occurred before 3 p.m. on West Putnam/Route 1.
The accident scene is near Holly Hill Lane. The delays are expected to continue through the afternoon, officials said.