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 / Highway Statistics Series / 2020 / Table HM-59 - Highway Statistics 2020

Highway Statistics Series

Highway Statistics 2020


Printable Excel Version [107 KB]
Printable PDF Version [187 KB]

Functional System Length - 2020 1/
Miles by Lane Width, Access Control and Average Daily Traffic Volume – Rural

National Summary

October 2021

Table HM-59 (Sheet 1 of 4)
LANE WIDTH AND ACCESS CONTROL AVERAGE DAILY TRAFFIC VOLUME
INTERSTATE OTHER FREEWAYS AND EXPRESSWAYS OTHER PRINCIPAL ARTERIAL
LESS THAN 10,000 10,000 - 19,999 20,000 - 34,999 35,000 AND OVER TOTAL LESS THAN 1,000 1,000 - 1,999 2,000 - 2,999 3,000 - 9,999 10,000 - 14,999 15,000 AND OVER TOTAL LESS THAN 1,000 1,000 - 1,999 2,000 - 2,999 3,000 - 9,999 10,000 - 14,999 15,000 AND OVER TOTAL
Undivided: 2/ Less than 9 feet - - - - - - - - - - - - 1 - - 90 - 11 102
9 feet - - - - - - - - - - - - 12 54 35 145 11 3 260
10 feet - - - - - - - - - - - - 213 271 251 697 76 53 1,560
11 feet 87 37 - - 124 - 50 7 16 3 4 79 971 1,482 1,812 3,153 401 64 7,883
12 feet 1,037 77 72 93 1,279 6 27 34 357 24 40 488 6,028 9,868 10,010 24,665 1,907 720 53,198
Greater than 12 feet 24 - - - 24 2 - - 8 - - 10 112 172 306 771 28 20 1,408
Total Undivided 1,148 114 72 93 1,427 7 77 42 380 28 43 578 7,336 11,847 12,413 29,521 2,424 870 64,410
Divided: 2/
No access control:		 Less than 9 feet - - - - - - - - - - - - - - - - - - -
9 feet - - - - - - - - - - - - - - - 7 - - 7
10 feet - - - - - - - - 1 - - 1 - 2 1 46 11 11 71
11 feet - - - - - - - - 6 - - 6 6 50 53 585 200 161 1,056
12 feet - 17 - - 17 - 6 21 177 63 51 318 42 176 741 7,016 2,566 2,038 12,579
Greater than 12 feet - - - - - - - - 2 5 - 7 1 10 8 307 157 63 546
Subtotal - 17 - - 17 - 6 21 186 68 51 332 49 239 803 7,961 2,934 2,274 14,259
Divided: 2/
Partial access control:		 Less than 9 feet - - - 6 6 - - - - - - - - - - - - - -
9 feet - - - - - - - - - - - - - - - 1 - - 1
10 feet - - - - - - - - - - 8 8 16 - 7 57 16 6 101
11 feet - - - - - - - - 1 - - 1 - - - 71 33 47 151
12 feet 5 5 20 - 30 - 26 94 814 390 508 1,832 5 57 278 2,675 1,232 1,226 5,472
Greater than 12 feet - - 13 - 13 - 1 5 23 19 1 50 1 24 19 182 43 28 297
Subtotal 5 5 34 6 49 - 27 99 838 409 517 1,890 22 81 303 2,986 1,323 1,308 6,023
Divided: 2/
Full access control:		 Less than 9 feet - - 3 - 3 - - - - - - - - - - - - - -
9 feet - - - 1 1 - - - - - - - - - - - - - -
10 feet 17 35 26 6 84 - - - - - - - - - - - - - -
11 feet 624 695 282 134 1,735 - - - 8 20 6 34 - - - - - - -
12 feet 4,603 7,635 7,921 4,286 24,445 - - - 859 826 1,169 2,853 - 2 108 404 95 249 858
Greater than 12 feet 148 221 83 49 500 - - - 1 10 8 19 - - - - 4 7 11
Subtotal 5,392 8,586 8,316 4,475 26,769 - - - 868 855 1,183 2,906 - 2 108 404 99 256 869
Total Divided 5,396 8,608 8,349 4,481 26,834 - 33 120 1,892 1,332 1,751 5,129 71 321 1,214 11,350 4,357 3,837 21,150
Total 6,544 8,721 8,421 4,575 28,261 8 110 162 2,272 1,360 1,794 5,706 7,406 12,169 13,627 40,871 6,780 4,707 85,560

October 2021

Table HM-59 (Sheet 2 of 4)
LANE WIDTH AND ACCESS CONTROL AVERAGE DAILY TRAFFIC VOLUME
MINOR ARTERIAL MAJOR COLLECTOR
LESS THAN 1,000 1,000 - 1,999 2,000 - 2,999 3,000 - 9,999 10,000 - 14,999 15,000 AND OVER TOTAL LESS THAN 100 100 - 499 500 - 999 1,000 - 4,999 5,000 - 9,999 10,000 AND OVER TOTAL
Undivided: 2/ Less than 9 feet 24 57 109 - 17 - 208 1,505 3,684 1,380 1,274 3 1 7,847
9 feet 335 247 175 98 14 - 868 2,966 7,219 3,882 4,280 140 1 18,489
10 feet 2,643 2,626 2,830 3,281 106 13 11,499 8,031 33,689 20,049 27,001 626 52 89,447
11 feet 6,881 6,478 6,085 5,170 182 60 24,856 9,064 31,701 24,954 31,085 1,251 191 98,246
12 feet 22,539 21,057 16,066 25,048 1,131 315 86,156 19,511 50,014 25,946 50,209 3,386 342 149,407
Greater than 12 feet 307 861 337 849 14 1 2,369 935 2,594 1,554 2,306 404 71 7,864
Total Undivided 32,728 31,327 25,603 34,447 1,463 388 125,956 42,011 128,901 77,765 116,156 5,810 657 371,300
Divided: 2/
No access control:		 Less than 9 feet - 1 - 35 - - 35 - 13 - - - 22 35
9 feet - - - 2 - - 2 - 3 3 - - - 6
10 feet - 6 2 11 1 19 38 - 5 54 18 3 - 81
11 feet 24 13 28 90 12 8 175 - 42 59 91 64 2 257
12 feet 4 82 398 869 258 286 1,895 - 19 21 309 383 43 775
Greater than 12 feet 1 90 12 21 30 4 158 - 23 2 24 - 1 52
Subtotal 28 191 439 1,027 300 317 2,303 - 106 139 443 450 67 1,206
Divided: 2/
Partial access control:		 Less than 9 feet - - - - - - - - - - - - - -
9 feet - - - - - - - - - - - - - -
10 feet - - - - - - - - - - - - - -
11 feet - - - - 33 - 33 - - - - - - -
12 feet - 14 5 269 56 35 378 - - - 41 88 16 145
Greater than 12 feet - - - 38 2 - 41 - - - - 1 - 1
Subtotal - 14 5 308 91 35 453 - - - 41 89 16 146
Divided: 2/
Full access control:		 Less than 9 feet - - - - - - - - - - - - - -
9 feet - - - - - - - - - - - - - -
10 feet - - - - - - - - - - - - - -
11 feet - 14 - - - - 14 - - - - - - -
12 feet - - - - 18 - 18 - - - 6 6 1 14
Greater than 12 feet - - - - - 1 1 - - - 18 - - 18
Subtotal - 14 - - 18 1 33 - - - 24 6 1 32
Total Divided 28 219 444 1,335 409 353 2,789 - 106 139 508 546 84 1,383
Total 32,756 31,546 26,047 35,782 1,873 741 128,745 42,011 129,007 77,905 116,663 6,356 741 372,684

Functional System Length - 2020 1/
Miles by Lane Width, Access Control and Average Daily Traffic Volume – Urban

National Summary

October 2021

Table HM-59 (Sheet 3 of 4)
LANE WIDTH AND ACCESS CONTROL AVERAGE DAILY TRAFFIC VOLUME
INTERSTATE OTHER FREEWAYS AND EXPRESSWAYS OTHER PRINCIPAL ARTERIAL
LESS THAN 30,000 30,000 - 69,999 70,000 - 124,999 125,000 - 174,999 175,000 AND OVER TOTAL LESS THAN 15,000 15,000 - 34,999 35,000 - 59,999 60,000 - 99,999 100,000 AND OVER TOTAL LESS THAN 7,500 7,500 - 14,999 15,000 - 34,999 35,000 - 59,999 60,000 AND OVER TOTAL
Undivided: 2/ Less than 9 feet - - - - - - - - - - - - 49 58 57 - - 164
9 feet - - - - - - - - - - - 1 40 63 73 - - 176
10 feet 1 - - - - 1 1 7 - - - 9 472 944 837 68 4 2,325
11 feet 24 2 1 - - 27 43 24 - - - 68 1,489 2,079 1,788 56 14 5,426
12 feet 97 109 42 30 3 280 190 195 23 3 3 414 5,722 8,783 8,460 486 2 23,453
Greater than 12 feet 7 - 3 1 - 10 18 15 1 - - 34 718 1,066 536 16 - 2,335
Total Undivided 128 112 46 31 3 319 253 242 25 4 3 526 8,491 12,994 11,750 626 20 33,881
Divided: 2/
No access control:		 Less than 9 feet - - - - - - - - - - - - 14 9 39 4 - 66
9 feet - - - - - - - - - - - - 2 17 52 - - 71
10 feet 5 - - - - 5 1 - - - 1 2 9 193 318 61 10 591
11 feet - 1 - - - 1 - 4 3 - - 8 128 485 1,219 469 25 2,325
12 feet 10 2 5 - - 17 116 90 36 14 19 275 911 3,657 9,126 2,463 250 16,406
Greater than 12 feet 7 - - - - 7 7 4 - - - 11 126 387 754 71 11 1,349
Subtotal 22 2 5 - - 29 125 98 40 14 20 297 1,190 4,747 11,508 3,067 296 20,807
Divided: 2/
Partial access control:		 Less than 9 feet - 3 - - - 3 1 - - - - 1 - - - - - -
9 feet - - - - - - - - - - - - - - 1 - - 2
10 feet 4 25 - - - 29 9 1 5 - - 15 1 26 70 21 3 122
11 feet - - - - - - 10 14 17 3 - 45 9 147 216 75 1 449
12 feet 28 33 1 - - 63 276 712 251 60 15 1,315 421 1,113 2,251 547 63 4,395
Greater than 12 feet 11 6 - - - 18 16 35 - - - 51 18 67 123 11 - 219
Subtotal 43 68 1 - - 113 313 762 273 63 15 1,426 450 1,354 2,662 653 67 5,186
Divided: 2/
Full access control:		 Less than 9 feet 7 - - - - 7 1 5 4 5 5 20 - - - - - -
9 feet - 1 13 8 - 22 1 12 - - - 13 1 - - - - 1
10 feet 12 47 3 1 - 63 6 17 10 - - 33 - - 4 - - 4
11 feet 227 200 59 41 13 541 52 42 35 23 9 162 7 5 25 - - 37
12 feet 3,420 6,592 4,438 1,584 863 16,897 902 2,334 2,344 1,853 1,280 8,713 95 229 435 76 36 871
Greater than 12 feet 62 95 42 7 41 246 27 36 24 4 4 94 7 4 3 - 5 19
Subtotal 3,729 6,935 4,556 1,640 916 17,776 989 2,445 2,418 1,886 1,298 9,035 110 237 467 76 41 931
Total Divided 3,794 7,005 4,561 1,641 916 17,918 1,427 3,305 2,731 1,963 1,333 10,758 1,750 6,338 14,637 3,796 404 26,924
Total 3,922 7,117 4,607 1,671 919 18,237 1,680 3,547 2,755 1,967 1,336 11,284 10,240 19,332 26,387 4,422 424 60,805

October 2021

Table HM-59 (Sheet 4 of 4)
LANE WIDTH AND ACCESS CONTROL AVERAGE DAILY TRAFFIC VOLUME
MINOR ARTERIAL MAJOR COLLECTOR MINOR COLLECTOR
LESS THAN 1,000 1,000 - 2,999 3,000 - 4,999 5,000 - 9,999 10,000 - 19,999 20,000 AND OVER TOTAL LESS THAN 1,000 1,000 - 2,999 3,000 - 4,999 5,000 - 9,999 10,000 - 19,999 20,000 AND OVER TOTAL LESS THAN 1,000 1,000 - 2,999 3,000 - 4,999 5,000 - 9,999 10,000 - 19,999 20,000 AND OVER TOTAL
Undivided: 2/ Less than 9 feet 101 151 79 155 70 3 560 669 748 343 180 22 8 1,970 281 202 29 12 6 2 531
9 feet 141 533 433 461 226 9 1,805 1,860 2,275 830 279 75 3 5,322 651 422 109 42 2 1 1,227
10 feet 476 2,467 2,166 4,164 3,377 183 12,833 5,992 10,231 4,296 3,350 1,143 16 25,028 1,496 2,002 469 354 17 2 4,340
11 feet 454 2,890 2,866 5,912 2,589 450 15,160 3,549 7,450 4,479 3,787 674 64 20,003 1,062 1,105 359 224 24 7 2,781
12 feet 1,269 5,939 7,297 16,523 12,013 2,391 45,433 6,824 14,675 10,930 9,785 3,459 478 46,151 2,269 2,765 1,034 509 121 8 6,707
Greater than 12 feet 259 1,612 1,828 4,138 1,627 202 9,666 1,930 3,826 3,044 1,944 290 11 11,045 367 556 762 93 15 5 1,797
Total Undivided 2,700 13,593 14,670 31,352 19,902 3,240 85,457 20,823 39,205 23,922 19,326 5,664 579 109,519 6,126 7,053 2,763 1,233 185 24 17,384
Divided: 2/
No access control:		 Less than 9 feet - - 1 29 4 - 34 3 2 - 6 5 3 19 - - 7 - 3 - 10
9 feet - - 3 16 13 15 48 1 1 7 37 13 - 59 - 1 - - 1 - 3
10 feet 11 22 16 305 612 268 1,234 21 45 99 221 88 10 483 3 11 14 25 2 1 57
11 feet 4 59 100 425 706 504 1,798 28 100 119 312 445 84 1,088 6 14 22 36 9 16 103
12 feet 115 145 326 2,304 3,429 1,886 8,206 77 582 423 1,255 804 235 3,376 99 366 252 203 127 16 1,064
Greater than 12 feet 7 59 75 390 795 315 1,642 44 162 176 387 86 30 886 5 29 20 38 3 - 95
Subtotal 137 287 522 3,469 5,560 2,988 12,961 174 891 823 2,219 1,441 363 5,911 114 422 315 303 145 33 1,331
Divided: 2/
Partial access control:		 Less than 9 feet - - - - 4 4 8 - - - - - - - - - - - - - -
9 feet - - - - - - - - - - - - - - - - - - - - -
10 feet - - - 13 68 5 86 - - - 1 - - 2 - - - - - - -
11 feet - 1 7 17 44 17 86 - - 2 4 1 - 7 - 1 - 1 - - 2
12 feet 1 100 40 151 467 145 904 13 4 4 68 56 1 148 - 1 12 16 - - 29
Greater than 12 feet 1 - 9 8 3 1 22 - 1 - 2 1 - 4 2 - - - - - 2
Subtotal 2 101 56 189 586 172 1,107 13 5 7 75 59 2 161 2 2 12 18 1 - 34
Divided: 2/
Full access control:		 Less than 9 feet - - - - - - - - - - - - - - - - - - - - -
9 feet - - - - - - - - - - - - - - - - - - - - -
10 feet - - - 15 40 - 56 - 1 3 - - - 4 - - - - - - -
11 feet - - - - 2 - 2 - - - - - - - - - - - - - -
12 feet - 4 - 73 18 23 116 - - 3 - - 2 5 - - - - 3 - 3
Greater than 12 feet - 1 - 1 1 1 5 - - - - - 1 1 - - - - - - -
Subtotal - 6 - 89 61 24 180 - 1 5 - - 3 10 - - - - 3 - 3
Total Divided 139 393 578 3,747 6,207 3,184 14,248 188 898 835 2,294 1,500 368 6,082 115 423 327 321 149 33 1,368
Total 2,839 13,987 15,248 35,099 26,109 6,423 99,705 21,011 40,103 24,757 21,619 7,164 947 115,601 6,241 7,476 3,090 1,554 334 57 18,752

1/ Includes the 50 States, the District of Columbia and Puerto Rico. Some differences from other tables may be noted because these are estimated from sample data; does not include samples entirely on structures.

2/ Differences may exist from prior years due to the redefinition of divided and undivided roadways in 1999.

Return to top

Page last modified on December 13, 2021
Privacy Policy | Freedom of Information Act (FOIA) | Accessibility | Web Policies & Notices | No Fear Act | Report Waste, Fraud and Abuse | U.S. DOT Home | USA.gov | WhiteHouse.gov

Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000