---- — LONDONDERRY — A teenage driver was flown to a Boston hospital by medical helicopter last night after his car struck an SUV, then rolled over at least once on the Interstate 93 overpass.
Police are not releasing the name of the victim, 19, who suffered serious head and spinal injuries in the crash.
The accident occurred on Route 102 shortly after 5 p.m., according to fire Battalion Chief Jim Roger.
A 3-year-old boy, who was a passenger in the SUV, was taken to Parkland Medical Center as a precaution, Roger said.
The teenager was taken there, too, then flown by DHART helicopter to a Boston hospital, police Sgt. Mark Morrison said.
The teenager was driving a Hyundai Elantra, which struck the right rear of a Ford Expedition. That impact caused the car to roll over, Morrison said.
Rescue workers from Londonderry and Derry responded, cutting away the Hyundai’s roof and door.
Roger praised rescue workers’ efforts, saying it took just 13 minutes to extricate the teenage victim.
A Hudson fire captain happened upon the scene and stopped to help, Roger said.
The toddler’s parents were not injured, Roger said.
Police were still investigating last night and Morrison said there was little information available.
The accident snarled traffic in the area for about an hour.