A woman was struck by a car and killed early Wednesday after she and a friend scaled a barrier meant to keep pedestrians from crossing Sunrise Highway in West Babylon, Suffolk County police said.

Dawn Bartlett, 34, of West Babylon, was hit on the eastbound service road by a 2005 Hyundai as she tried to cross the divided highway west of Hubbards Path at 12:40 a.m., police said. She was pronounced dead at the scene.

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Bartlett, who lived nearby, and her unidentified friend had climbed over concrete barriers and scaled fences atop the barriers to cross the highway from south to north to buy a pack of cigarettes at a service station, Det. Lt. Robert Edwards of the First Squad said. She was struck as they recrossed the highway from north to south, the lieutenant said. "This a limited-access highway, and pedestrians are not supposed to be on it," he said.

The driver, Shawn Baker, 43, of Centereach, told police he didn't see Bartlett before striking her. He was taken to Good Samaritan Hospital Medical Center in West Islip and treated for a rapid heartbeat and shock. He was not charged.

Police ask anyone with information to call 631-854-8140 or 631-854-8152.