United States' Transportation | United States Transportation

Railways: Total: 228,464 km standard gauge: 228,464 km 1.435-m gauge (2003)

Highways: Total: 6,406,296 km paved: 4,148,395 km (including 74,898 km of expressways) unpaved: 2,257,902 km (2002)

Waterways: 41,009 km (19,312 km used for commerce) (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: 466 ships (1,000 GRT or over) 12,436,658 GRT/14,630,116 DWT by type: barge carrier 8, bulk 69, cargo 75, chemical tanker 12, combination bulk 2, combination ore/oil 1, container 100, multi-functional large load carrier 3, passenger 12, passenger/cargo 2, petroleum tanker 81, refrigerated cargo 3, roll on/roll off 83, short-sea/passenger 3, vehicle carrier 12 foreign-owned: Australia 2, Canada 7, Denmark 17, Malaysia 1, Netherlands 1, Norway 6, Singapore 3, United Kingdom 5 registered in other countries: 670 (2003 est.)

Airports: 14,807 (2003 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 (2003 est.)

Airports - with unpaved runways: Total: 9,679 over 3,047 m: 1 2,438 to 3,047 m: 7 1,524 to 2,437 m: 161 914 to 1,523 m: 1,714 under 914 m: 7,796 (2003 est.)

Heliports: 155 (2003 est.)

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