New Gretna from New Jersey Please Register or Login to add your Restaurant Not Listed? Add your Restaurant! On Map Allen's Clam Bar - New Jersey, New Gretna, 5650 Ushighway 9 North, 08224 (609) 296-4106 Map Patio Drive-in - New Jersey, New Gretna, 5729 E Green Bush Rd, 08224 (609) 296-0916 Map