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U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

1-1 Transportation Network Length

Monday, December 21, 2015

Excel

miles

Mode 2003 2013
Highway    
Public roads 3,974,107 4,115,462
Public road lanesa 8,315,121 8,656,070
Pipeline    
Gas distribution 1,872,748 2,149,299
Gas transmission and gathering 324,492 320,146
Rail    
Class I freight railroad 99,126 95,235
Amtrak 22,675 21,356
Transit    
Commuter railb 6,809 7,731
Heavy railb 1,597 1,622
Light railb,c 996 1,836
Water    
Navigable waterwaysd 25,000 25,000

aMeasured in lane-miles. bMeasured in directional route-miles. cLight Rail was revised beginning in 2011. dEstimated length of domestic waterways.

Key: U = Data are unavailable.

Sources: Highway, Rail, Transit, Water–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 www.bts.gov as of September 2015. Pipeline–U.S. Department of Transportation, Pipeline and Hazardous Materials Administration, available at phmsa.dot.gov/pipeline/library/data-stats as of September 2015.