A New York State Department of Transportation worker was seriously injured while responding to a crash on the Long Island Expressway when an alleged drunk driver struck him in Holtsville, police said.

According to investigators, DOT employee Randolph Acum, 47, was responding to an overturned vehicle on the highway between Exits 62 and 63 around 9:40 p.m. Thursday. Police said he parked his DOT vehicle behind the overturned car.

Suffolk County police said Acum was placing traffic cones in the roadway when a car struck the worker and crashed around 10:30 p.m.

Acum, who lives in Mastic, was taken to Stony Brook University Hospital with serious injuries.

Suffolk County police identified the alleged drunk driver as Centereach resident Joseph Kalinowski, 54.

Kalinowski was also taken to Stony Brook University Hospital with minor injuries and released into police custody.

Suffolk County police charged Kalinowski with one count of driving while intoxicated.

Both Acum's DOT car and Kalinowski's vehicle were impounded.

Kalinowsk is scheduled to be arraigned at First District Court in Central Islip later today.

Detectives are asking anyone with information on this crash to call the Sixth Squad at 631-854-8652.