The International Port of Memphis encompasses approximately 150 to 200 industries with employment in the range of 5,000 to 6,000 people. The International Port of Memphis averages about 3,000 railcar movements per month and moved 16.8 million tons of material by barge in the last reported year, which was 1999. The Port is served by three of the 5 major railways that service the City of Memphis and two major interstates; I-40 running coast to coast and I-55 running from Chicago to New Orleans. Within the 15 mile river limitation of the International Port of Memphis, there are open site locations. However, the 1,000-acre industrial portion of the Presidents Island complex is currently 95+% occupied.