United States: Transportation#

National air transport systemnumber of registered air carriers: 92
inventory of registered aircraft operated by air carriers: 6,817
annual passenger traffic on registered air carriers: 798.23 million
annual freight traffic on registered air carriers: 37.219 billion mt-km (2015)
Civil aircraft registration country code prefixN (2016)
Airports13,513 (2013)
Airports - with paved runwaystotal: 5,054
over 3,047 m: 189
2,438 to 3,047 m: 235
1,524 to 2,437 m: 1,478
914 to 1,523 m: 2,249
under 914 m: 903 (2013)
Airports - with unpaved runwaystotal: 8,459
over 3,047 m: 1
2,438 to 3,047 m: 6
1,524 to 2,437 m: 140
914 to 1,523 m: 1,552
under 914 m: 6,760 (2013)
Heliports5,287 (2013)
Pipelinesnatural gas 1,984,321 km; petroleum products 240,711 km (2013)
Railwaystotal: 293,564.2 km
standard gauge: 293,564.2 km 1.435-m gauge (2014)
Roadwaystotal: 6,586,610 km
paved: 4,304,715 km (includes 76,334 km of expressways)
unpaved: 2,281,895 km (2012)
Waterways41,009 km (19,312 km used for commerce; Saint Lawrence Seaway of 3,769 km, including the Saint Lawrence River of 3,058 km, is shared with Canada) (2012)
Merchant marinetotal: 393
by type: barge carrier 6, bulk carrier 55, cargo 51, carrier 2, chemical tanker 30, container 84, passenger 18, passenger/cargo 56, petroleum tanker 35, refrigerated cargo 3, roll on/roll off 27, vehicle carrier 26
foreign-owned: 85 (Australia 1, Bermuda 5, Denmark 31, France 4, Germany 5, Malaysia 2, Norway 17, Singapore 16, UK 4)
registered in other countries: 794 (Antigua and Barbuda 7, Australia 2, Bahamas 109, Belgium 1, Bermuda 26, Canada 10, Cayman Islands 57, Comoros 2, Cyprus 5, Georgia 1, Greece 8, Honduras 1, Hong Kong 44, Indonesia 2, Ireland 2, Isle of Man 1, Italy 23, Liberia 53, Malta 34, Marshall Isla (2010)
Ports and terminalscargo ports (tonnage): Baton Rouge, Corpus Christi, Hampton Roads, Houston, Long Beach, Los Angeles, New Orleans, New York, Plaquemines, Tampa, Texas City
container port(s) (TEUs): Hampton Roads (1,918,029), Houston (1,866,450), Long Beach (6,061,091), Los Angeles (7,940,511), New York/New Jersey (5,503,485), Oakland (2,342,504), Savannah (2,944,678), Seattle (2,033,535)(2011)
cruise departure ports (passengers): Miami (2,032,000), Port Everglades (1,277,000), Port Canaveral (1,189,000), Seattle (430,000), Long Beach (415,000) (2009)
oil terminals: LOOP terminal, Haymark terminal
LNG terminal(s) (import): Cove Point (MD), Elba Island (GA), Everett (MA), Freeport (TX), Golden Pass (TX), Hackberry (LA), Lake Charles (LA), Neptune (offshore), Northeast Gateway (offshore), Pascagoula (MS), Sabine Pass (TX)
LNG terminal(s) (export): Kenai (AK)