At 11:18hrs Engine 23 was dispatched to the reported MVA in the 12600 block of the main lanes of US59. While enroute the corrected location of 11950 was given and reports of entrapment relayed bringing Truck 21 and Battalion 21. Upon arrival a multi-vehicle accident involving a commercial vehicle was reported with one entrapment in a sedan vehicle. While Engine 23 placed their Holmatro tools in service Truck 21 packaged 3-additional patients for transport and Battalion 21 assumed command. Following completion of extrication and transport of patients all units returned to service.