United StatesTransportation

Railways: total: 227,736 km
standard gauge: 227,736 km 1.435-m gauge (2003) Highways: total: 6,393,603 km
paved: 4,180,053 km (including 74,406 km of expressways)
unpaved: 2,213,550 km (2003) Waterways: 41,009 km (19,312 km used for commerce)
note: Saint Lawrence Seaway of 3,769 km, including the Saint Lawrence River of 3,058 km, shared with Canada (2004) Pipelines: petroleum products 244,620 km; natural gas 548,665 km (2003) 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: 486 ships (1,000 GRT or over) 12,436,658 GRT/14,630,116 DWT
by type: barge carrier 7, bulk carrier 19, cargo 152, chemical tanker 19, container 92, passenger 17, passenger/cargo 57, petroleum tanker 79, refrigerated cargo 2, roll on/roll off 28, vehicle carrier 14
foreign-owned: 49 (Australia 2, Canada 8, China 1, Denmark 20, Malaysia 2, Netherlands 1, Norway 2, Singapore 11, Sweden 1, United Kingdom 1)
registered in other countries: 680 (2005) Airports: 14,857 (2004 est.) Airports - with paved runways: total: 5,128
over 3,047 m: 188
2,438 to 3,047 m: 221
1,524 to 2,437 m: 1,375
914 to 1,523 m: 2,383
under 914 m: 961 (2004 est.) Airports - with unpaved runways: total: 9,729
over 3,047 m: 1
2,438 to 3,047 m: 7
1,524 to 2,437 m: 160
914 to 1,523 m: 1,718
under 914 m: 7,843 (2004 est.) Heliports: 155 (2004 est.) More about United States: Introduction Geography People Government Economy Communications Military Transnational Issues