Florida-based transportation giant CSX Corp. is planning a $272 million intermodal rail terminal in North Carolina serving the Raleigh region that it envisions as a major transportation hub to make the state’s ports more competitive. The major freight rail infrastructure project in the Triangle project will spur economic development and help position the region as a major transportation logistics hub, says the company. Wilmington could reap significant benefits if the intermodal freight rail hub is built in Johnston County, state transportation officials said Thursday. The railroad operator is committed to spending $150 million for the project, which will be located in Johnston County and depends on receiving $100 million state transportation funds.