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

Highway Statistics 2017


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

August 23, 2018
Table HM-16

OWNERSHIP FEDERAL-AID HIGHWAYS NON-
FEDERAL-AID
HIGHWAYS
TOTAL
NATIONAL HIGHWAY SYSTEM OTHER TOTAL
INTERSTATE OTHER TOTAL
Rural:              
   State Highway Agency 27,869 95,924 123,793 306,153 429,946 182,619 612,566
   County - 354 354 216,398 216,752 1,342,639 1,559,391
   Town, Township, Municipal (2) - 183 183 10,545 10,728 552,106 562,834
   Other Jurisdictions 1,338 395 1,733 2,966 4,699 53,493 58,192
   Federal Agency - 122 122 5,836 5,957 149,756 155,713
Total Rural 29,206 96,978 126,184 541,898 668,082 2,280,613 2,948,696
Small Urban Areas:              
   State Highway Agency 2,713 12,879 15,592 19,178 34,770 6,252 41,022
   County - 142 142 12,056 12,198 35,664 47,863
   Town, Township, Municipal (2) - 577 577 23,889 24,465 108,056 132,521
   Other Jurisdictions 92 30 122 138 261 934 1,195
   Federal Agency - 7 7 90 97 1,029 1,126
Total Small Urban Area 2,806 13,635 16,441 55,352 71,792 151,935 223,727
Urbanized Areas:              
   State Highway Agency 15,289 42,396 57,685 47,358 105,044 26,388 131,431
   County - 4,222 4,222 50,097 54,319 143,451 197,770
   Town, Township, Municipal (2) 17 13,480 13,496 111,519 125,015 543,736 668,751
   Other Jurisdictions 1,238 997 2,235 1,001 3,236 2,976 6,212
   Federal Agency 0 82 82 279 362 6,759 7,120
Total Urbanized Area 16,544 61,177 77,720 210,254 287,974 723,310 1,011,285
Total Urban:              
   State Highway Agency 18,002 55,275 73,277 66,537 139,814 32,640 172,453
   County - 4,364 4,364 62,153 66,517 179,116 245,633
   Town, Township, Municipal (2) 17 14,056 14,073 135,407 149,480 651,792 801,272
   Other Jurisdictions 1,331 1,026 2,357 1,139 3,496 3,910 7,407
   Federal Agency 0 90 90 369 459 7,787 8,246
Total Urban 19,350 74,811 94,161 265,606 359,767 875,245 1,235,012
Total Rural and Urban 48,556 171,789 220,345 807,504 1,027,849 3,155,858 4,183,707

(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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