Responders said the truck overturned from the Route 17 ramp to the Route 4 west ramp around 7:30 a.m.
UPDATE: The flyover has reopened.
The driver had self-extricated by the time emergency responders arrived and was taken to HMH Hackensack University Medical Center by Paramus EMS with unknown injuries.
As of 8:55 a.m., the ramp remained closed, as responders were working to remove the truck from the roadway, Paramus Police Sgt. Brian Gleason said.
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