Jennifer Mehigan, spokeswoman for Boston Emergency Medical Services, said the parents were on their way to a hospital Monday when they realized they likely would not make it in time for the birth, The Boston Globe reported Tuesday.
A training ambulance crew consisting of two recruits and one field training officer responded to the couple's 911 call and met them on Interstate 93 at Morrissey Boulevard.
Field Training Officer Miguel Diaz said the woman gave birth at the roadside moments after being loaded into the ambulance.
The mother and child were taken to Massachusetts General Hospital, where Mehigan said they were doing well.
Celebrity Families of 2014 [PHOTOS]