A service-based company, Johnston's Ports has four locations in two states, one of them the Port of Gramercy in Louisiana. Johnston's of Gramercy has a bulk terminal on the Mississippi River near Gramercy where it handles calcined and green petroleum coke. The Port of Gramercy facility operates 24 hours a day, seven days a week, serving both barges and ships involved in domestic and international shipping.
CII-Carbon LLC owns, and Johnston's of Gramercy operates the Coke Dock in the Port of Gramercy to receive petroleum coke by barge and to ship calcined coke by vessel. Rail service for the plant at the rear of the dock connects with the Canadian National Railway and Kansas City Southern Lines. The facility has an open storage area with capacity for 150 thousand tons of raw coke and a storage building and dome with capacity for 60 thousand tons of calcined coke. The Coke Dock in the Port of Gramercy has berthing space of 355 meters (1165 feet) with alongside depth of 12.8 meters (42 feet) LWRP.
Bell Chasse Marine Transportation owns and operates the Port of Gramercy's Grandview Launch to land water taxis and passengers, handle supplies, and fuel company-owned equipment. This Port of Gramercy Launch has berthing space of 43 meters (140 feet) with alongside depth of 4.9 meters (16 feet) LWRP.
Imperial Sugar Company owns and operates two docks in the Port of Gramercy. Both docks are served by rail trackage that connects with the Canadian National and Kansas City Southern Railroads. The Molasses Dock has molasses storage tanks with capacity for 2.5 million gallons, and this Port of Gramercy dock has berthing space of 243 meters (800 feet) with alongside depth of 13.7 meters (45 feet) LWRP. The company's Refined Sugar Dock in the Port of Gramercy was not in use at the time of the US Corps of Engineers survey. The Refined Sugar Dock has berthing space of 61 meters (200 feet) with alongside depth of 9.1 meters (30 feet) LWRP.
Kaiser Aluminum Corporation owns and operates its Bauxite Dock in the Port of Gramercy to ship liquid caustic soda and to receive bauxite. Rail tracks at the plant at the rear of the dock connect with the Canadian National and Kansas City Southern Railroads. This Port of Gramercy dock has a storage building with capacity for 250 thousand tons of bauxite and two storage tanks with capacity for almost six million gallons of caustic soda. The Port of Gramercy Bauxite Dock has berthing space of 231 meters (760 feet) with alongside depth of 12.2 meters (40 feet) LWRP.
River Parishes Company owns and operates the Port of Gramercy Mooring for its own tugs, crew boats, and its water barge. The Port of Gramercy Mooring has berthing space of 11 meters (36 feet) with alongside depth of 4.6 meters (15 feet) LWRP.