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Morris County, NJ (July 2, 2026) – Five people were injured on Tuesday night in a multi-vehicle crash involving an overturned box truck on Interstate 80 in Denville Township.
According to the New Jersey State Police, troopers responded to the westbound lanes of I-80 near milepost 39 at approximately 9:39 p.m.
A preliminary investigation found that an International box truck collided with a Mazda SUV. After the initial impact, the box truck continued forward, struck a Ford SUV, and overturned.
The driver and two passengers in the Mazda sustained moderate injuries and were transported to an area hospital for treatment. The driver and a passenger in the Ford suffered minor injuries and were also taken to a hospital.
State police said no other injuries were reported at the scene.
The cause of the crash remains under investigation, and no additional information has been released. We wish all five injured individuals a full and speedy recovery
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How Investigators Examine Multi-Vehicle Commercial Truck Crashes
Crashes involving commercial trucks and multiple vehicles often require detailed investigations because the sequence of impacts can be complex. Investigators examine vehicle damage, roadway evidence, debris patterns, skid marks, and witness statements to determine how the collision unfolded.
When a commercial vehicle overturns, investigators may also inspect the truck’s load, mechanical condition, and electronic data systems, as well as driver records if necessary. These findings help establish the cause of the crash and determine whether any traffic or safety violations contributed to the incident.
