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FHWA Home / Policy & Governmental Affairs / Highway Policy Information / Table HM-18M - Highway Statistics 2018

Highway Statistics 2018


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PUBLIC ROAD LENGTH - 2018 (1)
  KILOMETERS BY FUNCTIONAL SYSTEM AND FEDERAL-AID HIGHWAYS
  NATIONAL SUMMARY

August 30, 2019
Table HM-18M

FUNCTIONAL SYSTEM FEDERAL-AID HIGHWAYS NON-
FEDERAL-AID
HIGHWAYS
TOTAL
NATIONAL HIGHWAY SYSTEM OTHER TOTAL
INTERSTATE OTHER TOTAL
Rural:              
    Principal Arterial:              
      Interstate 47,193 - 47,193 - 47,193 - 47,193
      Other Freeways and Expressways - 10,436 10,436 30 10,466 - 10,466
      Other - 140,861 140,861 4,313 145,175 - 145,175
        Subtotal 47,193 151,298 198,491 4,344 202,834 - 202,834
    Minor Arterial - 3,628 3,628 211,979 215,608 - 215,608
    Major Collector - 785 785 655,992 656,776 - 656,776
    Minor Collector - 4 4 - 4 418,476 418,480
    Local - 23 23 - 23 3,261,363 3,261,386
Total Rural 47,193 155,738 202,931 872,314 1,075,245 3,679,839 4,755,084
  Small Urban: - - - - - - -
      Principal Arterial: - - - - - - -
        Interstate 4,538 - 4,538 - 4,538 - 4,538
        Other Freeways and Expressways - 2,240 2,240 72 2,312 - 2,312
        Other - 18,941 18,941 2,529 21,470 - 21,470
          Subtotal 4,538 21,181 25,719 2,601 28,321 - 28,321
      Minor Arterial - 648 648 33,226 33,874 - 33,874
      Major Collector - 97 97 45,692 45,790 - 45,790
      Minor Collector - 25 25 7,894 7,919 - 7,919
      Local - 25 25 - 25 245,903 245,928
Total Small Urban 4,538 21,975 26,514 89,414 115,928 245,903 361,831
  Urbanized: - - - - - - -
      Principal Arterial: - - - - - - -
        Interstate 26,710 - 26,710 - 26,710 - 26,710
        Other Freeways and Expressways - 17,102 17,102 148 17,250 - 17,250
        Other - 77,715 77,715 8,397 86,112 - 86,112
          Subtotal 26,710 94,817 121,527 8,545 130,072 - 130,072
      Minor Arterial - 2,326 2,326 146,314 148,639 - 148,639
      Major Collector - 687 687 163,202 163,889 - 163,889
      Minor Collector - 173 173 20,637 20,811 - 20,811
      Local - 171 171 - 171 1,171,142 1,171,313
Total Urbanized 26,710 98,174 124,884 338,698 463,582 1,171,142 1,634,724
Total Urban: - - - - - - -
    Principal Arterial: - - - - - - -
      Interstate 31,249 - 31,249 - 31,249 - 31,249
      Other Freeways And Expressways - 19,342 19,342 221 19,563 - 19,563
      Other - 96,656 96,656 10,926 107,582 - 107,582
        Subtotal 31,249 115,998 147,247 11,146 158,393 - 158,393
    Minor Arterial - 2,973 2,973 179,540 182,513 - 182,513
    Major Collector - 784 784 208,894 209,678 - 209,678
    Minor Collector - 198 198 28,532 28,730 - 28,730
    Local - 196 196 - 196 1,417,045 1,417,241
Total Urban 31,249 120,149 151,398 428,112 579,510 1,417,045 1,996,555
Total Rural and Urban 78,442 275,886 354,328 1,300,427 1,654,755 5,096,884 6,751,639

(1) Includes the 50 States, Puerto Rico, and the District of Columbia. Due to conversion from English to metric units and to rounding, individual cell values may not agree with corresponding mileage table cell values.

 

Page last modified on November 27, 2019
Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000