United States |
|
| INFRASTRUCTURE |
| |
| Telephones
- main lines in use |
194
million (1997) |
| Telephones
- mobile cellular |
69.209 million
(1998) |
| Radio broadcast
stations |
AM 4,762,
FM 5,542, shortwave 18 (1998) |
| Television
broadcast stations |
more than
1,500 (including nearly 1,000 stations affiliated with the
five major networks - NBC, ABC, CBS, FOX, and PBS; in addition,
there are about 9,000 cable TV systems) (1997) |
| Internet
country code |
.us |
| Internet
Service Providers (ISPs) |
7,000 (2002
est.) |
| Internet
users |
165.75 million
(2002) |
| Railways |
total: 194,731
km mainline routes
standard gauge: 194,731 km 1.435-m gauge
note: represents the aggregate length of roadway of all line-haul
railroads including an estimate for class II and III railroads;
excludes 135,185 km of yard tracks, sidings, and parallel
lines (2000) |
| Highways |
total: 6,334,859
km
paved: 3,737,567 km (including 89,426 km of expressways)
unpaved: 2,597,292 km (2000) |
| Waterways |
41,009 km
note: navigable inland channels, exclusive of the Great Lakes
|
| 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: 348
ships (1,000 GRT or over) 9,414,676 GRT/12,207,346 DWT
ships by type: barge carrier 2, bulk 71, cargo 26, chemical
tanker 13, combination bulk 2, combination ore/oil 1, container
79, freighter 15, heavy lift carrier 3, passenger/cargo 1,
petroleum tanker 73, refrigerated cargo 3, roll on/roll off
46, short-sea passenger 2, specialized tanker 2, vehicle carrier
9
note: includes some foreign-owned ships registered here as
a flag of convenience: Australia 1, Canada 4, Denmark 15,
France 1, Germany 1, Netherlands 3, Norway 7, Puerto Rico
4, Singapore 11, Sweden 1, United Kingdom 3; also, the US
owns 549 additional ships (1,000 GRT or over) totaling 29,616,347
DWT that operate under the registries of Antigua and Barbuda,
Australia, The Bahamas, Belize, Bermuda, Cambodia, Canada,
Cayman Islands, Cyprus, Finland, Gibraltar, Hong Kong (China),
Indonesia, Isle of Man, Italy, Liberia, Malta, Marshall Islands,
Netherlands, Norway, Norway (NIS), Panama, Peru, Philippines,
Saint Vincent and the Grenadines, Singapore, Tonga, UK, Vanuatu,
and Wallis and Futuna (2002 est.) |
| Airports |
14,801 (2002)
|
|
|
