The crash happened at around 3:15 a.m. Monday, June 12, in the westbound lanes of I-495 in Hauppauge.
According to Suffolk County Police, Brian Nieves, of Bay Shore, was driving a Jeep Grand Cherokee in the middle westbound lane when he struck the rear end of a tractor-trailer near Exit 56.
Nieves, who was alone, was ejected from the vehicle and died at the scene, police said.
The tractor-trailer driver, a 55-year-old Medford man, was not injured.
Suffolk County Police Motor Carrier Section officers conducted a safety check on the tractor-trailer and the Jeep was impounded for a safety check.
The crash closed all westbound lanes of the LIE for several hours between Exit 57 and Exit 56 while crews investigated. The highway has since reopened.
The Suffolk County Police Department is asking anyone with information on the crash to contact the agency at 631-854-8452.
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