Three relatively minor injuries were reported in the 1:30 p.m. crash, which left the jackknifed rig against the guardrail and across that entire road.
Three EMS units responded, along with New Jersey State Police, Mahwah police and firefighters and members of the state departments of environmental protection and transportation, as well as a township hazardous materials unit, which cleaned up a diesel spill.
A heavy-duty wrecker was needed to remove the rig.
Traffic was diverted onto Route 208, causing delays that eventually reached nearly an hour.
All northbound lanes were reopened around 5:30 p.m., as delays fell to under 25 minutes.
Rubbernecking congestion was also reported on the highway's southbound side.
Click here to follow Daily Voice Mahwah-Ramsey and receive free news updates.