A tractor trailer appeared to jackknife early Tuesday morning on Interstate 93 southbound in Boston, creating a traffic headache for drivers.

The crash happened around Exit 15 near the Mass. Ave Connector, closing three southbound lanes of the Southeast Expressway.

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As of 5 a.m., traffic was crawling through the area.

The tractor trailer, which appeared to be an Amazon truck was blocking several lanes. Cars were only able to get by through the right lane.

It's unclear what led up to the crash or how long these delays will last.

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