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FHWA Home / Policy & Governmental Affairs / Highway Policy Information / Highway Statistics Series / 2021 / Table HM-30M - Highway Statistics 2021

Highway Statistics Series

Highway Statistics 2021


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National Highway System Length - 2021 (1)
  Kilometers Open and Not Open to Traffic

February 28, 2023

Table HM-30M
STATE OPEN TO TRAFFIC NOT OPEN TO TRAFFIC TOTAL
INTERSTATE OTHER TOTAL TOTAL
RURAL URBAN TOTAL RURAL URBAN TOTAL RURAL URBAN TOTAL RURAL URBAN TOTAL RURAL URBAN TOTAL
Alabama 918 697 1,615 3,236 2,078 5,314 4,155 2,775 6,930 - - - 4,155 2,775 6,930
Alaska 1,612 127 1,738 1,590 258 1,848 3,202 385 3,587 - - - 3,202 385 3,587
Arizona 1,474 406 1,881 1,936 1,351 3,287 3,410 1,757 5,168 - - - 3,410 1,757 5,168
Arkansas 798 438 1,236 3,118 1,093 4,211 3,916 1,531 5,447 - - - 3,916 1,531 5,447
California 1,945 2,008 3,953 6,593 12,967 19,560 8,538 14,975 23,513 - - - 8,538 14,975 23,513
Colorado 1,043 489 1,532 4,146 2,223 6,369 5,189 2,712 7,901 - - - 5,189 2,712 7,901
Connecticut 46 511 557 254 1,541 1,795 300 2,052 2,352 - - - 300 2,052 2,352
Delaware - 65 65 241 394 635 241 459 700 - - - 241 459 700
Dist. of Columbia - 19 19 - 199 199 - 218 218 - - - - 218 218
Florida 1,154 1,252 2,406 4,450 7,326 11,776 5,604 8,578 14,182 - 110 110 5,604 8,688 14,292
Georgia 866 1,141 2,007 5,224 4,402 9,626 6,091 5,543 11,633 - - - 6,091 5,543 11,633
Hawaii - 88 88 129 515 644 129 604 732 - - - 129 604 732
Idaho 839 149 987 2,734 411 3,146 3,573 560 4,133 - - - 3,573 560 4,133
Illinois 2,001 1,516 3,517 3,881 5,083 8,963 5,882 6,599 12,481 - - - 5,882 6,599 12,481
Indiana 1,274 792 2,066 2,773 1,094 3,867 4,047 1,886 5,934 - - - 4,047 1,886 5,934
Iowa 984 284 1,268 5,512 1,513 7,025 6,496 1,797 8,293 - - - 6,496 1,797 8,293
Kansas 1,030 379 1,409 4,879 821 5,700 5,909 1,200 7,109 - - - 5,909 1,200 7,109
Kentucky 1,144 374 1,519 2,662 1,150 3,812 3,806 1,525 5,331 - - - 3,806 1,525 5,331
Louisiana 852 654 1,506 1,816 1,828 3,643 2,667 2,482 5,149 - - - 2,667 2,482 5,149
Maine 449 140 589 1,289 257 1,546 1,738 397 2,136 - - - 1,738 397 2,136
Maryland 229 541 769 609 2,116 2,725 838 2,656 3,494 - - - 838 2,656 3,494
Massachusetts 101 812 912 689 3,773 4,462 790 4,584 5,374 - - - 790 4,584 5,374
Michigan 905 1,088 1,993 3,997 4,401 8,398 4,902 5,490 10,391 5 - 5 4,907 5,490 10,396
Minnesota 946 524 1,470 5,618 1,363 6,981 6,565 1,887 8,451 - - - 6,565 1,887 8,451
Mississippi 931 408 1,339 2,918 1,606 4,524 3,849 2,014 5,863 261 83 344 4,110 2,097 6,207
Missouri 1,363 866 2,229 4,827 2,165 6,992 6,190 3,031 9,221 - - - 6,190 3,031 9,221
Montana 1,762 157 1,920 4,463 352 4,815 6,225 509 6,734 - - - 6,225 509 6,734
Nebraska 667 110 777 4,317 748 5,064 4,984 858 5,842 - 2 2 4,984 860 5,844
Nevada 735 260 995 2,485 674 3,159 3,220 934 4,154 - - - 3,220 934 4,154
New Hampshire 228 134 362 623 515 1,137 851 648 1,499 - - - 851 648 1,499
New Jersey 72 622 694 314 3,768 4,082 386 4,390 4,776 - - - 386 4,390 4,776
New Mexico 1,358 250 1,608 2,816 610 3,426 4,174 860 5,035 - - - 4,174 860 5,035
New York 1,297 1,512 2,809 3,690 6,514 10,203 4,987 8,025 13,012 - - - 4,987 8,025 13,012
North Carolina 909 1,284 2,193 3,551 3,421 6,972 4,460 4,705 9,165 - - - 4,460 4,705 9,165
North Dakota 820 98 919 4,741 329 5,070 5,562 427 5,989 - - - 5,562 427 5,989
Ohio 1,034 1,505 2,540 3,055 3,569 6,624 4,089 5,075 9,164 - - - 4,089 5,075 9,164
Oklahoma 1,045 456 1,501 3,738 1,089 4,827 4,783 1,545 6,328 - - - 4,783 1,545 6,328
Oregon 797 377 1,174 4,276 1,503 5,779 5,073 1,880 6,954 - - - 5,073 1,880 6,954
Pennsylvania 1,716 1,283 2,999 3,055 5,480 8,535 4,771 6,763 11,534 - - - 4,771 6,763 11,534
Rhode Island 29 84 113 174 683 857 203 767 970 - - - 203 767 970
South Carolina 879 490 1,369 2,550 1,878 4,429 3,430 2,368 5,798 90 18 108 3,520 2,386 5,906
South Dakota 951 141 1,092 4,650 241 4,891 5,601 382 5,983 - - - 5,601 382 5,983
Tennessee 1,037 896 1,934 2,806 3,333 6,139 3,843 4,229 8,073 - - - 3,843 4,229 8,073
Texas 3,223 2,355 5,579 13,528 10,599 24,127 16,752 12,954 29,706 - - - 16,752 12,954 29,706
Utah 1,102 408 1,510 1,909 1,134 3,044 3,011 1,542 4,553 - - - 3,011 1,542 4,553
Vermont 412 103 515 495 143 638 907 246 1,153 - - - 907 246 1,153
Virginia 954 846 1,801 2,848 2,826 5,674 3,803 3,672 7,475 - - - 3,803 3,672 7,475
Washington 690 538 1,229 3,098 3,003 6,101 3,788 3,541 7,329 - - - 3,788 3,541 7,329
West Virginia 514 380 894 1,647 666 2,313 2,161 1,046 3,207 - - - 2,161 1,046 3,207
Wisconsin 824 591 1,415 5,087 3,127 8,213 5,910 3,718 9,628 - - - 5,910 3,718 9,628
Wyoming 1,299 170 1,469 3,168 290 3,458 4,467 460 4,927 - - - 4,467 460 4,927
U.S. Total 47,261 30,822 78,083 158,206 118,422 276,628 205,468 149,244 354,711 356 213 569 205,824 149,457 355,280
Puerto Rico 87 372 459 109 662 771 196 1,034 1,230 - - - 196 1,034 1,230
Grand Total 47,349 31,193 78,542 158,315 119,084 277,399 205,664 150,278 355,941 356 213 569 206,020 150,491 356,510

(1) Due to conversion from English to metric units and to rounding, individual cell values may not agree with corresponding mileage table cell values.
Please note that due to data review and production issues with the 2021 HPMS data, some anomalous and/or missing data may exist.

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