An apparently drunk driver made it easy for cops to arrest him when he slammed his car into a concrete barrier — right at the front entrance to 1 Police Plaza, cops said.

Robert Grosman, 24, of Sheepshead Bay, rammed his black 2017 Dodge Ram pick-up into the barricade at the Avenue of the Finest and Pearl Street around 4:50 a.m., police said.

He showed signs of being intoxicated and had a strong odor of alcohol on his breath, cops said

He was charged with disobeying a traffic device, driving while ability impaired and refusal to take a breathalyzer test.