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PARAMUS. N.J. – A tractor-trailer overturned on the Garden State Parkway and spilled debris, causing a partial closure of the highway and growing delays.

It happened on a northbound lane on Route 17 at Route 4 early Wednesday. Northbound lanes are closed and southbound lanes are subject to closure.

Several emergency vehicles on scene.

Vehicles can been seen backed up for miles on the northbound lanes.