A few days after Carrie Kilpatrick’s son would have celebrated his 21st birthday, the grieving mother erected a roadside memorial in his honor, warning others against the dangers of drunken driving. The sign went up Wednesday on State Street near Allen Road and Veterans Park in Hampshire. Kilpatrick regularly will pass the face of her 17-year-old son, Nicholas, which is highlighted in the photo she mounted on the blue memorial sign that reads, “Please don’t drive drunk.” Nicholas’ siblings will see the road marker every day on their way home from school. “Yeah, it’s a little painful.