U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
202-366-4000


Skip to content
Facebook iconYouTube iconTwitter iconFlickr iconLinkedInInstagram

Policy and Governmental Affairs
Office of Highway Policy Information

FHWA Home / Policy & Governmental Affairs / Highway Policy Information / Table HM-12M - Highway Statistics 2018

Highway Statistics 2018


Printable Excel Version [52 KB]
Printable PDF Version [31 KB]

To view PDF files, you can use the Acrobat® Reader®.
To view XLS files, you can use the Excel Viewer

PUBLIC ROAD LENGTH - 2018 (1)
    KILOMETERS BY TYPE OF SURFACE AND OWNERSHIP/
    FUNCTIONAL SYSTEM NATIONAL SUMMARY

October 2019
Table HM-12M

OWNERSHIP/
FUNCTIONAL SYSTEM
UNPAVED PAVED (2) TOTAL
BITUMINOUS CONCRETE COMPOSITE TOTAL
Rural:            
  State Highway Agency: (3)            
    Interstate 0 27,951 9,194 7,879 45,024 45,024
    Other Freeways & Expressways 0 5,215 2,786 2,052 10,053 10,053
    Other Principal Arterial 440 114,886 9,197 18,903 142,986 143,425
    Minor Arterial 130 165,529 3,465 24,975 193,969 194,099
    Major Collector 2,288 322,162 1,365 12,544 336,072 338,360
    Subtotal 2,858 635,743 26,008 66,353 728,103 730,961
  Other Jurisdictions:            
    Interstate 0 1,356 236 471 2,063 2,063
    Other Freeways & Expressways 0 78 208 - 286 286
    Other Principal Arterial 24 983 329 13 1,324 1,348
    Minor Arterial 516 12,212 123 598 12,934 13,450
    Major Collector 54,673 211,896 11,268 10,039 233,203 287,876
    Subtotal 55,213 226,525 12,164 11,121 249,810 305,022
  Federal Agency:            
    Interstate 0 0 0 0 - -
    Other Freeways & Expressways 0 - - - - -
    Other Principal Arterial 0 76 2 - 78 78
    Minor Arterial 0 1,931 0 - 1,931 1,931
    Major Collector 521 2,605 1 59 2,666 3,187
    Subtotal 521 4,612 4 59 4,676 5,197
Subtotal 58,592 866,879 38,175 77,533 982,588 1,041,180
    Minor Collector 129,792   288,692 418,484
    Local 1,856,240     1,405,152 3,261,392
Total Rural 2,044,624       2,676,432 4,721,056
Urban:            
  State Highway Agency: (3)            
    Interstate 0 14,264 7,998 6,377 28,639 28,639
    Other Freeways & Expressways 0 9,299 5,035 3,135 17,469 17,469
    Other Principal Arterial 0 53,888 7,468 17,333 78,689 78,689
    Minor Arterial 13 49,771 1,961 12,062 63,794 63,807
    Major Collector 28 36,202 2,211 3,259 41,672 41,700
    Minor Collector 20 3,241 18 384 3,642 3,662
      Subtotal 61 166,664 24,690 42,551 233,905 233,965
  Other Jurisdictions: - - - - - -
    Interstate 0 1,175 327 441 1,942 1,942
    Other Freeways & Expressways 0 882 777 40 1,699 1,699
    Other Principal Arterial 6 22,070 3,284 2,558 27,912 27,917
    Minor Arterial 355 89,809 11,065 9,309 110,184 110,539
    Major Collector 1,639 137,009 11,103 9,149 157,262 158,900
    Minor Collector 954 19,807 598 977 21,382 22,335
    Subtotal 2,954 270,752 27,154 22,475 320,381 323,334
  Federal Agency:            
    Interstate 0 0 0 0 - -
    Other Freeways & Expressways 0 49 2 1 52 52
    Other Principal Arterial 0 11 - 7 17 17
    Minor Arterial 0 264 - 2 266 266
    Major Collector 12 158 9 3 170 181
    Minor Collector 10 35 - - 35 45
    Subtotal 22 517 11 12 540 562
Subtotal 3,036 437,933 51,855 65,038 554,825 557,861
    Local 71,323   1,345,919 1,417,241
Total Urban 74,359       1,900,744 1,975,103
Total Rural and Urban 2,118,983 1,304,812 90,031 142,571 4,577,176 6,696,159

(1) Includes the 50 States, Puerto Rico, and the District of Columbia. Some differences from other tables may be noted because these are estimated from sample and summary data; some States may have missing/incomplete data. Due to conversion from English to metric units and to rounding, individual cell values may not agree with corresponding mileage table cell values.

(2) Paved includes the following categories: Bituminous -- bituminous, asphalt-concrete (AC) overlay over existing AC pavement; Concrete -- JPCP jointed plain concrete pavement, JRCP jointed reinforced concrete pavement, CRCP continuously reinforced concrete pavment; unbonded jointed concrete overlay on PCC pavement, bonded PCC overlay on PCC pavement, other (includes "whitetopping"); Composite -- AC overlay over jointed concrete pavement, AC (bituminous overlay over existing CRCP).

(3) Prior to 1999 included other state agency roads.

 

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