The Harley-Davidson rider from Pennsylvania came in contact with a tractor-trailer, according to police.
The motorcyclist flown by medical treatment after a highway crash Thursday in Warren County was hospitalized in critical condition, according to New Jersey State Police.
The male rider, from East Stroudsburg, was riding a Harley-Davidson east on Interstate 80 at 3:22 p.m. when he came in contact with a tractor-trailer at mile-post 15.3, east of Exit 12, in Frelinghuysen Township, Trooper Lawrence Peele said.
The rider suffered serious injuries and was flown by a medical helicopter that landed on the highway to Morristown Medical Center, Peele said.
Authorities closed all eastbound lanes until about 5:40 p.m., according to the New Jersey Department of Transportation. The left and center lanes remained closed while police investigated the crash until about 9:35 p.m., resulting in significant delays in the area.
State police continued to investigate what caused the crash. There were no other injuries.
MORE: Motorcyclist hurt in Warren County accident
Police were not immediately releasing the rider's name pending notification of family and because of the degree of injuries he suffered, Peele said.
Kurt Bresswein may be reached at kbresswein@lehighvalleylive.com. Follow him on Twitter @KurtBresswein. Find lehighvalleylive.com on Facebook.