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FHWA Home / Policy & Governmental Affairs / Highway Policy Information / Table HM-16M - Highway Statistics 2017

Highway Statistics 2017


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Public Road Length - 2017 (1)
    Kilometers by Ownership and Federal-Aid Highways
    National Summary

August 23, 2018
Table HM-16M

OWNERSHIP FEDERAL-AID HIGHWAYS NON-
FEDERAL-AID
HIGHWAYS
TOTAL
NATIONAL HIGHWAY SYSTEM OTHER TOTAL
INTERSTATE (2) OTHER TOTAL
Rural:              
   State Highway Agency 44,850 154,375 199,225 492,706 691,931 293,897 985,829
   County - 570 570 348,259 348,829 2,160,768 2,509,597
   Town, Township, Municipal (2) - 294 294 16,971 17,265 888,528 905,793
   Other Jurisdictions 2,153 636 2,789 4,774 7,562 86,089 93,651
   Federal Agency - 196 196 9,391 9,587 241,009 250,596
Total Rural 47,003 156,071 203,073 872,101 1,075,174 3,670,291 4,745,466
Small Urban Areas:              
   State Highway Agency 4,367 20,726 25,093 30,865 55,957 10,061 66,019
   County - 229 229 19,403 19,631 57,396 77,027
   Town, Township, Municipal (2) - 928 928 38,445 39,373 173,899 213,273
   Other Jurisdictions 149 48 197 223 420 1,503 1,923
   Federal Agency - 12 12 145 157 1,655 1,812
Total Small Urban Area 4,515 21,943 26,458 89,080 115,538 244,515 360,054
Urbanized Areas:              
   State Highway Agency 24,605 68,230 92,836 76,216 169,051 42,467 211,518
   County - 6,794 6,794 80,623 87,418 230,863 318,280
   Town, Township, Municipal (2) 27 21,693 21,720 179,472 201,192 875,058 1,076,250
   Other Jurisdictions 1,993 1,604 3,596 1,611 5,207 4,789 9,997
   Federal Agency 0 132 132 450 582 10,877 11,459
Total Urbanized Area 26,625 98,454 125,079 338,371 463,450 1,164,055 1,627,505
Total Urban:              
   State Highway Agency 28,972 88,957 117,928 107,080 225,009 52,528 277,537
   County - 7,023 7,023 100,026 107,049 288,259 395,308
   Town, Township, Municipal (2) 27 22,622 22,648 217,917 240,565 1,048,958 1,289,523
   Other Jurisdictions 2,141 1,652 3,793 1,834 5,627 6,293 11,920
   Federal Agency 0 144 144 594 739 12,532 13,271
Total Urban 31,140 120,397 151,537 427,451 578,988 1,408,570 1,987,558
Total Rural and Urban 78,143 276,468 354,611 1,299,552 1,654,163 5,078,861 6,733,024

(1) Includes the 50 States, Puerto Rico (data may not be complete), and the District of Columbia. Due to conversion from English to metric units and rounding, individual cells may not agree with corresponding mileage table cell values. May differ from other tables; excludes unknown ownership mileage.

(2) Prior to 1999, municipal was included with other jurisdictions.

 

Page last modified on November 27, 2018
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