BERNARDS TOWNSHIP (AP) — Northbound traffic was at  crawl following a fatal accident on Interstate 287 in the Bedminster area.

Cleanup of a tractor trailer accident on Interstate 287 in Bedminster (Courtesy Tom Kaminski /WCBS Chopper 880)

The crash happened in Bernards Township just before 1:30 a.m. Thursday.

State police tell News 12 New Jersey a tractor-trailer collided with a car and overturned. The truck driver was killed and the driver of the car was not injured.

A witness tells Lehigh Valley Live the truck burst into flames when it kept going and hit a sound wall. 

The crash remains under investigation.

Northbound traffic on I-287 along with Interstate 78 was backed up for miles.

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