Police say trooper Matthew Salisbury arrived early Wednesday on Route 146 in Lincoln, a small town ranked among Money magazine's 100 Best Places to Live.
Salisbury saw a man standing outside his pickup truck and yelling that a woman in the passenger seat was having a baby.
The trooper helped turn the infant while the mother pushed a final time. Then he removed the umbilical cord from the baby's neck and helped the baby to breathe.
The mother and baby are healthy and resting comfortably at a hospital.
