Transportation Network Length: 2005, 2015

miles
Mode 2005 2015
Highway
Public roads
3,995,635
4,154,727
Public road lanesa
8,371,718
8,736,587
Pipeline
Gas distribution
1,962,351
2,190,494
Gas transmission and gathering
324,222
318,924
Rail
Class I freight railroad
95,664
93,628
Amtrak
22,007
21,358
Transit
Commuter railb
7,118
7,697
Heavy railb
1,622
1,643
Light railb,c
1,188
1,893
Water
Navigable waterwaysd
25,000
25,000

Notes:

aMeasured in lane-miles. bMeasured in directional route-miles. cLight Rail was revised beginning in 2011 and includes light rail, street car rail, and hybrid rail. dEstimated length of domestic waterways.

Sources:

Highway, Rail, Transit, Water, and Pipeline: As cited in U.S. Department of Transportation, Bureau of Transportation Statistics, National Transportation Statistics, tables 1-1, 1-6, and 1-10, available at https://www.bts.gov/.

Last Updated: October 2017 | Retrieved: October 2017