Table 3-1M. Miles and Kilometers of Infrastructure by Transportation Mode (Historical)

Table in Excel format

	1980	1990	2000	2001	2002	2003	2004	Percent change, 1980-2004
Public roads, route kilometers	6,211,806	6,223,214	6,358,681	6,378,255	6,407,877	6,421,036	6,433,291	3.6
National Highway System (NHS)	N	N	259,409	259,782	259,972	260,393	260,968	N
Interstates	66,176	72,540	75,113	75,179	75,234	75,267	75,377	13.9
Other NHS	N	N	184,296	184,603	184,738	185,126	185,591	N
Freight Intermodal connectors1	N	N	N	N	2,882	2,982	NA	N
Other	N	N	6,099,272	6,118,473	6,147,905	6,160,644	6,172,322	N
Strategic Highway Corridor Network (STRAHNET)	N	N	99,886	101,041	101,054	100,706	100,193	N
Interstate	N	N	75,116	75,184	75,232	75,274	75,377	N
Non-Interstate	N	N	24,766	25,857	25,822	25,432	24,816	N
Railroad	294,6342	283,098	274,412	229,546	227,547	226,819	225,704	-23.4
Class I	NA	214,347	194,082	157,122	160,843	159,235	156,905	NA
Regional	NA	29,572	33,761	28,065	24,217	25,183	25,172	NA
Local	NA	39,167	46,570	44,358	42,487	42,401	43,628	NA
Inland waterways
Navigable channels	17,703	17,703	17,703	17,703	17,703	17,703	17,703	0.0
Great Lakes-St. Lawrence Seaway	3,769	3,769	3,769	3,769	3,769	3,769	3,769	0.0
Pipelines
Oil	351,469	335,954	284,847	255,063	259,409	258,892	NA	NA
Gas	1,692,666	1,913,832	2,203,675	2,210,434	2,271,428	2,292,028	2,353,344	39.0

Key: N = not applicable; NA = not available.

¹Excludes intermodal connectors serving intercity bus, Amtrak, and public transit facilities.
²Excludes Class III railroads.

Note: 1 mile = 1.61 kilometers.

Sources: Public roads: U.S. Department of Transportation, Federal Highway Administration, Highway Statistics, (Washington, DC: Annual issues) table HM-16.
Intermodal connectors: U.S. Department of Transportation, Federal Highway Administration, Office of Planning, National Highway System Intermodal Connectors, available at https://www.fhwa.dot.gov/hep10/nhs/intermodalconnectors/index.html as of July 5, 2005.
Rail: Association of American Railroads, Railroad Facts (Washington, DC: various issues).
Navigable channels: U.S. Army Corps of Engineers.
Great Lakes-St. Lawrence Seaway: Great Lakes-St. Lawrence Seaway System, "Seaway Facts," available at http://www.greatlakes-seaway.com/en/aboutus/seawayfacts.html as of Jan. 26, 2006.
Oil pipelines: 1980-2002: Eno Transportation Foundation, Transportation in America, 2002 (Washington, DC: 2002). 2003: U.S. Department of Transportation, Pipeline and Hazardous Materials Safety Administration, Office of Pipeline Safety, Pipeline Statistics, Internet site http://ops.dot.gov/stats/lpo.htm as of July 5, 2005.
Gas pipelines: American Gas Association, Gas Facts (Arlington, VA: Annual issues).