It happened before 4:30 a.m. Tuesday in the northbound lanes at Exit 9, West Fordham Road.
The tanker lost control and overturned onto a car.
All northbound lanes were closed for several hours as crews arrived to clean up the scene and worked to right the tanker.
Southbound lanes were not closed, but NewsCopter 7 found significant delays there as well, delays that extended to the Cross Bronx Expressway and the George Washington Bridge.
Motorists were advised to seek alternate routes.
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