By Paul Tennant
---- — HAVERHILL — A state police sergeant assigned to a road detail on Interstate 495 was injured when his cruiser was struck from behind by another vehicle just south of Exit 51 at 8:20 last night.
The unidentified trooper was assigned to a construction detail on the northbound side of the highway. He was in a cruiser, which was deployed to protect the crew working on the road, according to state police spokesman David Procopio.
The car that hit the cruiser was driven by a 64-year-old man believed to have medical issues, Procopio said. He and the sergeant were transported to hospitals by ambulance.
The trooper was taken to Anna Jaques Hospital in Newburyport, according to Procopio. He had no visible injuries and was conscious and alert, Procopio said. The accident is being investigated by Massachusetts State Police Troop A, the Collision Analysis and Reconstruction Section and the Crime Scene Services Section.
Traffic on the northbound side of 495 was stopped for about 40 minutes as police investigated the accident scene. As of 9:30 only one of the four traffic lanes was open and debris was visible across the highway. Traffic continued to advance at a crawl two hours after the accident.