@United States:Transportation
Railways: total: 240,000 km mainline routes (nongovernment owned) standard gauge: 240,000 km 1.435-m gauge (1989)
Highways: total : 6,261,154 km paved: 3,759,516 km (including 88,500 km of expressways) unpaved: 2,501,638 km (1995 est.)
Waterways: 41,009 km of navigable inland channels, exclusive of the
Great Lakes
Pipelines: petroleum products 276,000 km; natural gas 331,000 km (1991)
Ports and harbors: Anchorage, Baltimore, Boston, Charleston, Chicago,
Duluth, Hampton Roads, Honolulu, Houston, Jacksonville, Los Angeles,
New Orleans, New York, Philadelphia, Port Canaveral, Portland
(Oregon), Prudhoe Bay, San Francisco, Savannah, Seattle, Tampa, Toledo
Merchant marine: total: 305 ships (1,000 GRT or over) totaling 10,319,000 GRT/14,454,000 DWT ships by type : bulk 15, cargo 22, chemical tanker 16, intermodal 119, liquefied gas tanker 14, passenger-cargo 3, tanker 104, tanker tug-barge 12 note: in addition, there are 193 government-owned vessels (1996 est.)
Airports: 13,396 (1996 est.)
Airports - with paved runways: total: 11,677 over 3,047 m: 180 2,438 to 3,047 m: 201 1,524 to 2,437 m: 1,217 914 to 1,523 m: 2,354 under 914 m : 7,725 (1996 est.)
Airports - with unpaved runways: total: 1,719 over 3,047 m: 1 2,438 to 3,047 m: 7 1,524 to 2,437 m : 152 914 to 1,523 m: 1,559 (1996 est.)