Around 9:30PM on June 9th, Waltham fire received a call for an accident on I 95 North bound near Route 20. Engine 4 Squad 5, Medic 1 and Ambulance 1 were dispatched. Engine 4 arrived and reported a two car accident one of which was on its roof. The occupants were out of the car. The accident took place at the begining of a construction project on I-95 This may have contributed to the accident. One person was sent to Lahey Hospital.