Table 1-1M: System Kilometers Within the United States

Table 1-1M: System Kilometers Within the United States

(Statute Kilometers)

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  1960 1965 1970 1975 1980 1985 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000
Highwaya 5,706,240 5,937,942 6,002,985 6,176,897 6,211,806 6,218,364 6,223,214 6,250,563 6,278,181 6,284,828 6,287,055 6,296,117 R6,308,068 R6,350,265 R6,286,564 6,304,192 6,334,747
Class I railb,c 333,672 321,544 316,202 308,222 265,255 234,584 192,732 187,691 181,946 177,712 175,953 174,234 170,235 164,359 161,852 160,017 194,082
Amtrakc N N N N 38,624 38,624 38,624 40,234 40,234 40,234 40,234 38,624 40,234 40,234 35,406 37,015 37,015
Transitd                                  
Commuter railc N N N N N 5,752 6,649 6,498 6,457 6,583 6,583 6,695 5,926 7,108 8,324 8,354 U
Heavy rail N N N N N 2,081 2,174 2,203 2,258 2,336 2,342 2,346 2,379 2,457 2,457 2,478 U
Light rail N N N N N 618 777 887 898 865 904 913 1,027 1,061 1,088 1,291 U
Navigable channelse 40,234 40,234 41,843 41,843 41,843 41,843 41,843 41,843 41,843 41,843 41,843 41,843 41,843 41,843 41,843 41,843 41,843
Oil pipelinef 307,295 339,358 351,917 363,533 351,469 343,764 335,954 328,029 R316,309 R312,181 R306,339 R292,759 285,715 289,478 287,506 285,599 U
Gas pipelineg 1,015,416 1,235,204 1,469,761 1,575,971 1,692,666 1,800,655 1,942,308 1,972,023 2,017,995 2,013,442 2,024,508 2,031,237 2,054,030 2,013,610 R2,082,913 2,165,181 U

KEY: N = data do not exist; R = revised; U = data are not available.

a All public road and street kilometers in the 50 states and the District of Columbia. For years prior to 1980, some kilometers of nonpublic roadways are included. No consistent data on private road kilometers are available. Beginning in 1998, approximately 69,200 kilometers of Bureau of Land Management Roads are excluded.

b Data represent kilometers of road owned (aggregate length of road, excluding yard tracks, sidings, and parallel lines).

c Portions of Class I freight railroads, Amtrak, and commuter rail networks share common trackage. Amtrak data represent kilometers of track operated.

d Transit system kilometers is measured in directional route-kilometers. A directional route-kilometer is the kilometer in each direction over which public transportation vehicles travel while in revenue service. Directional route-kilometers are computed with regard to direction of service, but without regard to the number of traffic lanes or rail tracks existing in the right-of-way.

e The St. Lawrence Seaway is not included in this number because 3 of the 5 subsections are solely in Canadian waters, and the others are in international boundary waters. Of the 41,800 kilometers of navigable waterways, 17,500 kilometers are commercially significant shallow-draft inland waterways subject to fuel taxes.

f Includes trunk and gathering lines for crude-oil pipeline.

g Excludes service pipelines. Data not adjusted to common diameter equivalent. Kilometers as of the end of each year. Includes field and gathering, transmission, and distribution mains. See table 1-8 for a more detailed breakout of oil and gas pipeline kilometers.

NOTE: Numbers may differ slightly from previous year's metric tables because a higher precision conversion factor was used. 1.609344 kilometers = 1 mile.

SOURCES:

Highway:

1960-95: U.S. Department of Transportation, Federal Highway Administration, Highway Statistics Summary to 1995, FHWA-PL-97-009 (Washington, DC: Annual issues), table HM-212.

1996-98, 2000: Ibid., Highway Statistics (Washington, DC: Annual issues), table HM-20.

1999: Ibid., personal communication, May 2002.

Class I rail:

1960-99: Association of American Railroads, Railroad Facts (Washington, DC: 2000), p. 44.

2000: Ibid., Railroad 10-Year Trends, personal communications, Sept. 19, 2001.

Amtrak:

1980: Amtrak, Corporate Planning and Development, personal communication (Washington, DC).

1985-2000: Amtrak, Corporate Planning and Development, Amtrak Annual Report, Statistical Appendix (Washington, DC: Annual issues).

Transit:

1985-99: U.S. Department of Transportation, Federal Transit Administration, National Transit Database (Washington, DC: Annual issues) table 20 and similar tables in earlier editions.

Navigable channels:

1960-96: U.S. Army Corps of Engineers, Ohio River Division, Huntington District, Ohio River Navigation System Report, 1996, Commerce on the Ohio River and its Tributaries (Fort Belvoir, VA: 1996), p. 2.

1997-99: Waterborne Commerce Statistics Center Databases, personal communication, Aug. 3, 2001.

Oil pipeline:

1960-99: Eno Transportation Foundation, Inc., Transportation in America, 2000 (Washington, DC: 2001), p. 44.

Gas pipeline:

1960-99: American Gas Association, Gas Facts (Arlington, VA: Annual issues), table 5-2 and similar tables in earlier editions.