Authorities closed one eastbound lane of the highway in Greenwich Township as responders doused the blaze.
A truck hauling a trailer burst into flames Tuesday evening on Interstate 78 in Warren County.
It was reported about 4:40 p.m. at mile-post 4.5 of I-78 East in Greenwich Township, New Jersey State Police confirmed.
The fire was out as of about 5:30 p.m., a trooper said, and there were no initial reports of any injuries. State police at Perryville had no further information available Tuesday night on the investigation into the incident.
The incident temporarily closed the right lane of the highway just east of Exit 3 (Routes 173/22).
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Responding along with state police were the Stewartsville and Alpha volunteer fire companies.
Freelance photographer Dave Dabour contributed to this report from the scene.
Kurt Bresswein may be reached at kbresswein@lehighvalleylive.com. Follow him on Twitter @KurtBresswein. Find lehighvalleylive.com on Facebook.