This excerpt taken from the CSX 10-K filed Feb 15, 2007.
Track and Infrastructure
Serving 23 states, the District of Columbia, and the Canadian provinces of Ontario and Quebec, the CSXT rail network serves, among other markets, New York, Philadelphia and Boston in the northeast and mid-Atlantic, the southeast markets of Atlanta, Miami and New Orleans, and the Midwestern cities of St. Louis, Memphis and Chicago.
CSXTs track structure includes main thoroughfares connecting terminals and yards (known as mainline track); track within terminals and switching yards; track adjacent to the mainlines used for passing trains; track connecting the mainline track to customer locations; and track that diverts trains from one track to another known as turnouts. Track miles are greater than the Companys 21,000 route miles, which reflect the size of CSXs rail network that connects markets, customers, and western railroads. At December 2006, the breakdown of track miles was as follows:
In addition to its physical track structure, CSXT operates numerous yards and terminals. These serve as the hubs between the company and its local customers and as sorting facilities where rail cars often are received, re-sorted, and placed onto new outbound trains. The following thirty-six yards are identified as key to the CSXT system:
For a list of Intermodals terminals, see page 12.