At approximately 1136 station 81 was alerted for a vehicle accident involving a roll over. Medic 102 was first on scene and had confirmed 1 patient entrapped with 2 additional patients. Units arrived on scene and began working on the trapped patient. Both North and South bound of Route 13 were shut down. Patients were taken by both ground and air to near by hospitals. Rt 13 remained shut down for some time after units cleared.