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PHILADELPHIA (CBS) – A crash involving two tractor-trailers snarled traffic on I-95 on Friday morning. The crash happened on the northbound lanes of I-95, right before Academy Road, in Northeast Philadelphia, just after 4:45 a.m.

Officials say two tractor-trailers collided, causing one to jackknife.

The crash blocked off two lanes on I-95 northbound. The scene was cleared around 9 a.m. but residual delays still remain.

The collision also damaged the median.

There were no reported injuries.