total: 240,000 km mainline routes (nongovernment owned), standard gauge (1.435 m) (1989)
See also Transportation in the United States.
... 7.5 km² (2.9 mi²) of it is land and 0.2 km² (0.1 mi²) of it is water. The total area is 2.35% water. Demographics As of the census of 2000, ...