Table 2,,,
Major Elements of the U.S. Freight Transportation System: 2002,,,
Mode,System extent,,
"Highway


",Public roads,,
,"46,769 miles of Interstate highway",,
,"115,032 miles of other National Highway System roads",,
,"3,828,046 miles of other roads",,
"Air
",Public-use airports,,
,"5,286 airports",,
"Rail


",Miles of railroad operated,,
,"98,944 miles by Class I freight railroads in the United States (1)",,
,"15,648 miles by regional freight railroads",,
,"26,347 miles by local freight railroads",,
"Water






","26,000 miles of navigable waterways ",,
,Commercial waterway facilities ,,
,Great Lakes: 600 deep-draft,,
,Great Lakes: 154 shallow-draft
,"Inland: 2,361 shallow-draft"
,"Ocean: 4,284 deep-draft"
,"Ocean: 1,765 shallow-draft"
,Locks: 275
"Pipeline




",Oil
,"Crude lines: 64,336 miles of pipe "
,"Product lines: 75,565 miles of pipe "
,Gas 
,"Transmission: 309,503 miles of pipe "
,"Distribution: 1,079,565 miles of pipe  "
"
(1)  Includes 570 miles of railroad owned by Canada.  ",
"SOURCE: Various sources, as cited in USDOT, Bureau of Transportation Statistics (BTS), National Transportation Statistics, available at http:// www.bts.gov; Association of American Railroads, Railroad Facts, 2003 (Washington, DC: 2004); USDOT, Federal Highway Administration, Highway Statistics 2003 (Washington, DC: 2004), table HM-18; Oil & Gas Journal, Aug. 23, 2004; USDOT, Federal Transit Administration, 2002 National Transit Summaries and Trends, table 18 and appendix, available at www.ntdprogram.com; USDOT, BTS, “Airport Activity Statistics of Certificated Air Carriers, Summary Tables, 12 Months Ending Dec. 31, 2002,” 2004; U.S. Army Corps of Engineers, Institute for Water Resources, Navigation Data Center, The U.S. Waterway System Facts, December 2003 (Alexandria, VA: 2003).",