 The Port of Texas City, operated by the Port of Texas City / Texas City Terminal Railway, is the eighth-largest port in the United States and the third-largest in Texas, with waterborne tonnage exceeding 78 million net tons.The Texas City Terminal Railway Company provides an important land link to the port, handling over 25,000 carloads per year.The Port of Texas City's success as a privately owned port has been aided by its shareholders, the Union Pacific and Burlington Northern Santa Fe railroads, whose connections allow for expeditious interchange of their traffic.