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FHWA Home / Policy & Governmental Affairs / Highway Policy Information / Highway Statistics Series / 2020 / Table HM-47A - Highway Statistics 2020

Highway Statistics Series

Highway Statistics 2020


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NATIONAL HIGHWAY SYSTEM LENGTH - 2020
  DAILY TRAVEL BY MEASURED PAVEMENT ROUGHNESS - RURAL

October 26, 2021

(THOUSANDS)

INTERNATIONAL ROUGHNESS INDEX (IRI) (1)

Table HM-47A (Sheet 1 of 4)
STATE INTERSTATE SYSTEM OTHER
NOT REPORTED (2) < 60 60-94 95-119 120-144 145-170 171-194 195-220 > 220 TOTAL REPORTED NOT REPORTED (2) < 60 60-94 95-119 120-144 145-170 171-194 195-220 > 220 TOTAL REPORTED
Alabama 2 13,020 2,225 687 406 206 72 68 65 16,748 62 7,809 5,179 815 351 187 102 51 51 14,546
Alaska 21 825 676 235 118 80 31 17 24 2,006 48 209 322 71 45 34 20 13 25 738
Arizona 186 11,447 3,871 1,389 844 398 181 89 77 18,297 115 2,562 3,142 1,563 911 516 222 103 104 9,122
Arkansas - 5,645 2,775 854 424 226 124 54 74 10,175 - 2,238 4,249 1,595 991 479 253 141 175 10,121
California 8 16,341 12,731 5,708 3,808 2,364 1,152 614 694 43,413 302 10,460 17,962 6,982 4,441 2,101 815 537 877 44,176
Colorado - 1,950 5,330 2,349 1,153 604 482 289 175 12,332 - 2,626 5,204 2,345 1,147 561 230 120 105 12,337
Connecticut - 814 419 44 21 13 - 7 8 1,326 1 507 810 293 151 60 38 19 9 1,887
Delaware - - - - - - - - - - 2 737 1,160 313 109 50 23 16 5 2,414
District of Columbia - - - - - - - - - - - - - - - - - - - -
Florida - 24,020 3,214 404 195 65 24 9 - 27,930 56 14,899 10,034 1,868 687 310 82 31 54 27,965
Georgia - 12,128 6,001 1,043 369 227 121 38 28 19,956 - 7,863 8,253 2,057 794 351 104 47 72 19,542
Hawaii - - - - - - - - - - 10 24 237 156 95 64 36 24 20 657
Idaho 2 4,661 1,728 401 156 63 19 21 95 7,143 12 2,742 2,664 559 277 120 80 51 168 6,661
Illinois - 14,380 5,599 1,144 500 290 116 69 76 22,173 - 1,990 3,829 1,776 1,088 733 365 217 241 10,239
Indiana 1 10,700 4,789 1,347 772 439 239 176 175 18,636 3 6,943 4,379 1,283 628 274 107 57 40 13,711
Iowa - 4,902 4,892 1,339 613 213 90 40 59 12,148 131 3,475 5,608 3,080 1,606 779 390 210 217 15,364
Kansas 2 5,317 2,524 727 279 123 41 16 16 9,042 3 6,501 3,816 666 288 150 74 46 32 11,573
Kentucky 8 15,738 3,478 933 450 372 165 77 30 21,243 34 6,001 4,471 1,541 717 276 102 68 44 13,221
Louisiana 48 7,072 4,568 2,828 1,747 856 316 97 53 17,537 19 765 2,738 1,344 874 526 301 196 280 7,023
Maine - 3,190 1,027 350 129 50 26 21 14 4,807 1 1,952 1,420 459 231 157 90 61 131 4,500
Maryland - 2,336 1,921 419 187 57 21 19 38 4,998 2 3,164 2,023 289 115 87 69 61 57 5,865
Massachusetts - 1,281 398 81 48 35 10 10 6 1,869 - 418 874 374 211 103 53 34 40 2,106
Michigan 45 3,938 5,737 1,626 933 528 212 148 120 13,240 1 6,861 6,786 1,915 796 461 219 108 129 17,275
Minnesota - 4,142 3,602 774 273 130 29 16 8 8,973 - 7,506 6,116 2,120 975 508 225 96 69 17,614
Mississippi - 8,201 2,844 703 401 286 103 61 34 12,634 - 4,129 6,160 1,772 1,166 692 275 124 96 14,413
Missouri - 13,228 3,496 516 269 113 47 25 19 17,714 - 10,945 7,433 1,656 693 289 101 74 60 21,252
Montana - 3,655 2,282 395 186 100 34 19 33 6,704 - 2,223 2,987 817 341 162 74 32 59 6,695
Nebraska - 3,843 2,744 651 237 60 19 11 10 7,575 11 2,797 3,112 1,104 574 336 173 103 144 8,343
Nevada - 5,348 497 93 43 20 7 1 3 6,013 - 2,945 1,152 216 102 44 25 11 11 4,506
New Hampshire - 2,384 243 54 14 14 3 2 3 2,717 - 1,825 1,031 226 124 80 58 26 42 3,412
New Jersey - 1,031 1,220 294 114 46 17 15 - 2,736 - 801 1,158 310 205 101 59 33 49 2,715
New Mexico - 7,032 2,530 733 434 256 150 57 79 11,272 - 3,074 3,200 806 407 228 109 66 82 7,972
New York 64 5,890 3,803 1,184 591 310 125 54 63 12,019 64 1,681 5,493 1,902 979 487 235 138 128 11,042
North Carolina 557 11,598 3,013 552 297 142 50 25 43 15,719 243 8,726 10,211 2,713 976 439 167 82 84 23,399
North Dakota - 2,394 1,002 170 53 16 9 6 2 3,652 - 2,903 1,625 291 108 51 22 17 34 5,051
Ohio 6 11,992 5,023 1,377 793 404 214 119 148 20,071 11 6,056 6,384 2,041 850 348 152 71 80 15,982
Oklahoma 352 7,035 4,419 907 468 264 148 74 67 13,382 83 3,097 5,944 2,218 1,195 713 393 247 339 14,146
Oregon 55 5,677 3,236 634 219 89 28 11 14 9,908 53 3,473 4,992 1,266 525 246 110 57 40 10,709
Pennsylvania - 12,508 7,850 2,284 1,071 693 283 231 294 25,214 2 3,843 6,863 2,285 1,062 509 287 148 206 15,203
Rhode Island - 543 72 14 2 8 1 - 1 641 - 155 150 98 108 94 67 36 25 734
South Carolina - 13,836 4,209 1,206 604 310 136 55 43 20,398 53 3,001 5,906 1,855 866 390 193 90 100 12,400
South Dakota - 2,662 2,591 444 113 45 18 5 2 5,880 - 1,763 2,119 724 348 180 80 44 35 5,293
Tennessee 2 19,144 2,668 517 300 120 80 27 10 22,865 63 5,686 4,576 1,044 483 247 111 63 43 12,252
Texas 42 22,676 18,406 4,931 1,715 686 329 141 96 48,981 123 21,431 22,122 7,536 3,258 1,370 628 310 224 56,880
Utah - 5,265 3,165 594 147 50 11 8 11 9,251 - 1,360 2,469 939 441 164 57 20 22 5,473
Vermont 1 1,827 506 104 44 23 18 3 3 2,529 3 600 617 171 94 50 34 27 28 1,621
Virginia - 9,694 10,135 1,628 404 194 52 18 14 22,139 3 3,818 9,621 2,729 1,002 329 115 46 45 17,705
Washington - 6,121 3,573 851 377 180 171 127 188 11,589 6 2,275 4,782 2,025 801 343 138 94 94 10,553
West Virginia - 2,471 1,977 329 210 102 51 42 78 5,260 19 1,154 1,962 891 474 264 128 74 105 5,052
Wisconsin 122 5,724 4,716 1,952 902 475 185 89 69 14,112 228 3,614 5,464 4,123 2,666 1,582 571 276 248 18,543
Wyoming - 4,449 1,603 423 211 105 51 26 20 6,888 152 1,372 1,923 588 251 93 36 11 17 4,290
U.S. Total 1,526 360,076 175,325 48,219 23,647 12,449 5,810 3,148 3,182 631,855 1,918 202,998 230,729 75,810 37,631 18,715 8,400 4,625 5,383 584,292
Puerto Rico 40 12 415 321 141 164 114 95 355 1,617 - 5 60 103 112 130 92 85 160 748
Grand Total 1,567 360,088 175,740 48,540 23,788 12,613 5,924 3,243 3,537 633,472 1,918 203,003 230,789 75,913 37,744 18,845 8,493 4,710 5,542 585,040

NATIONAL HIGHWAY SYSTEM LENGTH - 2020
  DAILY TRAVEL BY MEASURED PAVEMENT ROUGHNESS - RURAL

October 26, 2021

(THOUSANDS)

INTERNATIONAL ROUGHNESS INDEX (IRI) (1)

Table HM-47A (Sheet 2 of 4)
STATE TOTAL RURAL NHS
NOT REPORTED (2) < 60 60-94 95-119 120-144 145-170 171-194 195-220 > 220 TOTAL REPORTED
Alabama 64 20,829 7,404 1,502 757 392 174 119 117 31,294
Alaska 69 1,034 997 306 164 113 51 30 49 2,744
Arizona 301 14,009 7,013 2,952 1,755 914 403 192 180 27,419
Arkansas - 7,883 7,023 2,449 1,415 705 377 195 249 20,296
California 310 26,801 30,693 12,691 8,249 4,465 1,968 1,152 1,570 87,588
Colorado - 4,576 10,534 4,694 2,300 1,164 712 409 279 24,669
Connecticut 1 1,321 1,229 337 172 73 38 26 17 3,214
Delaware 2 737 1,160 313 109 50 23 16 5 2,414
District of Columbia - - - - - - - - - -
Florida 56 38,920 13,247 2,272 882 375 106 40 54 55,896
Georgia - 19,990 14,254 3,100 1,163 578 225 85 101 39,498
Hawaii 10 24 237 156 95 64 36 24 20 657
Idaho 14 7,403 4,392 960 432 183 99 73 263 13,804
Illinois - 16,369 9,429 2,920 1,588 1,023 481 286 317 32,413
Indiana 5 17,643 9,168 2,630 1,400 713 346 232 215 32,347
Iowa 131 8,377 10,499 4,419 2,219 992 481 250 275 27,512
Kansas 5 11,818 6,340 1,393 567 274 114 61 48 20,615
Kentucky 42 21,739 7,948 2,474 1,167 648 267 145 75 34,464
Louisiana 67 7,837 7,306 4,172 2,621 1,381 616 293 333 24,560
Maine 1 5,141 2,447 809 360 207 116 82 145 9,307
Maryland 2 5,500 3,943 708 302 144 90 80 95 10,862
Massachusetts - 1,699 1,272 455 259 137 63 43 45 3,974
Michigan 46 10,799 12,522 3,541 1,728 989 431 255 249 30,515
Minnesota - 11,648 9,718 2,894 1,247 637 253 111 77 26,587
Mississippi - 12,330 9,004 2,475 1,567 978 378 185 130 27,047
Missouri - 24,173 10,929 2,173 963 402 148 99 79 38,965
Montana - 5,878 5,269 1,211 527 263 108 52 91 13,400
Nebraska 11 6,640 5,856 1,755 812 396 192 114 154 15,918
Nevada - 8,293 1,649 309 145 64 33 11 15 10,519
New Hampshire - 4,208 1,274 280 138 93 62 28 45 6,129
New Jersey - 1,832 2,378 604 318 147 76 48 49 5,452
New Mexico - 10,106 5,730 1,538 841 484 259 123 161 19,243
New York 128 7,571 9,295 3,086 1,570 797 360 192 190 23,062
North Carolina 800 20,323 13,225 3,265 1,274 581 217 107 127 39,118
North Dakota - 5,297 2,627 460 161 67 31 24 36 8,703
Ohio 17 18,048 11,407 3,418 1,644 752 367 190 228 36,054
Oklahoma 435 10,132 10,363 3,125 1,663 977 541 322 405 27,528
Oregon 108 9,150 8,228 1,900 744 335 137 69 54 20,616
Pennsylvania 2 16,352 14,713 4,568 2,133 1,203 569 379 500 40,417
Rhode Island - 698 222 112 110 102 68 36 26 1,375
South Carolina 53 16,837 10,115 3,060 1,470 699 329 144 143 32,798
South Dakota - 4,425 4,710 1,168 462 224 98 48 38 11,173
Tennessee 65 24,830 7,243 1,560 784 368 190 90 53 35,118
Texas 165 44,108 40,528 12,467 4,974 2,056 957 451 320 105,860
Utah - 6,625 5,634 1,533 588 215 68 28 32 14,724
Vermont 4 2,428 1,123 275 139 73 52 30 31 4,150
Virginia 3 13,512 19,756 4,357 1,406 523 167 64 58 39,844
Washington 6 8,396 8,355 2,876 1,179 523 309 221 282 22,142
West Virginia 19 3,626 3,939 1,219 684 366 178 116 183 10,311
Wisconsin 350 9,337 10,181 6,075 3,567 2,057 756 365 318 32,656
Wyoming 152 5,821 3,525 1,010 462 198 88 38 36 11,178
U.S. Total 3,445 563,075 406,054 124,029 61,278 31,163 14,211 7,773 8,565 1,216,147
Puerto Rico 40 17 475 424 254 294 206 180 515 2,365
Grand Total 3,485 563,091 406,529 124,453 61,532 31,457 14,417 7,953 9,079 1,218,512

NATIONAL HIGHWAY SYSTEM LENGTH - 2020
  DAILY TRAVEL BY MEASURED PAVEMENT ROUGHNESS - URBAN

October 26, 2021

(THOUSANDS)

INTERNATIONAL ROUGHNESS INDEX (IRI) (1)

Table HM-47A (Sheet 3 of 4)
STATE INTERSTATE SYSTEM OTHER
NOT REPORTED (2) < 60 60-94 95-119 120-144 145-170 171-194 195-220 > 220 TOTAL REPORTED NOT REPORTED (2) < 60 60-94 95-119 120-144 145-170 171-194 195-220 > 220 TOTAL REPORTED
Alabama 15 13,333 3,958 1,929 1,256 921 484 483 561 22,926 179 8,270 10,562 2,969 1,631 883 465 296 404 25,481
Alaska 5 1,170 485 172 87 27 19 7 14 1,981 6 381 710 430 280 178 68 67 94 2,209
Arizona 718 9,541 6,234 1,553 758 456 182 105 155 18,985 1,240 9,515 10,159 4,466 3,532 2,397 1,636 987 1,181 33,873
Arkansas - 4,837 4,553 2,254 1,182 648 379 291 306 14,450 - 923 3,332 1,750 1,265 980 628 513 968 10,357
California 233 25,967 62,080 34,168 25,452 16,512 8,980 5,190 5,552 183,901 7,074 24,124 52,695 39,915 37,395 30,090 19,564 15,895 51,446 271,125
Colorado - 4,604 8,183 4,422 3,143 1,702 855 331 407 23,647 1 3,212 10,597 6,486 5,227 3,392 2,205 1,537 2,890 35,545
Connecticut - 11,062 9,558 2,349 1,229 593 261 82 157 25,291 216 3,921 7,645 3,416 2,381 1,492 840 576 971 21,241
Delaware 17 710 1,285 556 200 235 103 53 95 3,237 9 974 3,072 1,197 556 349 226 131 196 6,701
District of Columbia - 82 325 251 173 79 113 52 29 1,105 33 37 155 109 216 205 252 319 1,682 2,975
Florida - 43,693 20,950 5,914 3,166 2,060 872 358 380 77,394 130 47,450 61,486 21,118 10,775 6,311 2,921 1,782 2,435 154,279
Georgia - 40,311 13,038 4,077 2,411 1,180 479 205 113 61,814 - 16,491 21,018 7,467 4,145 2,460 1,275 848 1,134 54,839
Hawaii 10 133 900 752 744 721 518 328 423 4,518 123 389 1,236 1,095 969 751 441 328 651 5,861
Idaho 10 2,387 1,405 262 166 89 37 - 16 4,362 21 1,066 1,515 484 290 185 140 72 271 4,024
Illinois - 17,281 22,810 5,946 3,852 3,045 1,679 814 1,021 56,448 14 2,966 11,439 9,584 7,714 5,710 3,802 3,091 6,613 50,918
Indiana 10 9,997 7,313 3,944 2,437 1,364 512 344 277 26,188 62 3,648 3,914 1,691 1,119 760 381 213 264 11,992
Iowa - 2,434 2,828 919 515 354 117 95 85 7,346 160 964 2,261 1,949 1,439 980 647 521 1,048 9,808
Kansas 46 4,662 2,172 1,059 654 281 196 89 33 9,146 9 2,072 2,646 1,100 698 524 334 199 307 7,879
Kentucky 244 7,774 4,888 1,840 1,036 716 316 110 88 16,769 295 2,713 4,815 2,826 1,547 786 453 293 297 13,730
Louisiana 342 6,437 5,493 2,852 2,721 2,416 1,319 888 744 22,870 815 1,551 4,235 2,672 2,554 2,349 1,633 1,265 2,696 18,954
Maine - 1,705 699 154 79 57 18 15 14 2,743 105 358 562 317 242 167 120 64 163 1,993
Maryland 9 14,140 12,537 3,283 1,652 1,193 598 537 1,059 34,999 123 8,958 13,324 5,014 3,233 2,392 1,674 1,407 3,782 39,785
Massachusetts 233 24,761 6,933 1,967 1,124 874 506 259 354 36,777 397 9,143 8,130 4,472 4,122 4,111 2,921 2,408 7,950 43,257
Michigan 49 7,281 17,938 5,523 3,069 2,197 1,263 828 864 38,961 532 4,688 14,864 9,265 6,885 5,055 3,502 2,896 6,790 53,945
Minnesota - 6,318 8,482 2,855 1,164 765 451 159 163 20,356 7 5,784 8,421 3,521 1,617 861 358 215 200 20,977
Mississippi - 6,835 2,442 709 553 430 212 106 49 11,336 - 2,431 4,942 2,553 1,652 1,105 727 510 1,025 14,946
Missouri - 18,064 8,700 2,542 1,694 982 554 387 279 33,203 - 7,068 8,848 4,045 2,491 2,067 1,090 766 1,272 27,646
Montana - 820 655 103 41 27 12 8 4 1,669 - 355 675 472 333 309 172 127 319 2,762
Nebraska - 893 1,653 760 340 142 57 32 26 3,902 38 383 1,794 1,201 944 850 627 576 1,836 8,212
Nevada - 3,235 2,963 1,800 1,616 759 324 114 72 10,882 - 3,538 3,464 1,994 1,700 920 449 259 382 12,708
New Hampshire - 4,111 488 78 6 22 7 2 - 4,713 4 3,777 1,367 501 341 232 131 88 182 6,619
New Jersey - 11,845 13,146 3,264 2,200 1,276 1,057 791 1,415 34,993 - 15,888 19,918 8,275 6,117 4,855 3,473 2,944 7,145 68,614
New Mexico - 3,263 1,939 633 474 358 161 100 90 7,017 - 1,236 1,493 847 707 455 275 185 435 5,633
New York 515 7,314 15,507 8,367 4,579 3,191 1,897 1,480 3,127 45,462 2,007 2,616 17,981 13,444 10,999 8,448 6,652 5,452 15,125 80,718
North Carolina 326 25,663 14,574 4,429 1,668 789 600 273 313 48,308 385 9,000 15,921 8,841 5,522 3,051 1,582 931 1,156 46,004
North Dakota - 483 597 168 96 18 8 3 3 1,375 2 260 506 371 358 273 143 90 191 2,194
Ohio 97 26,324 17,265 5,623 3,439 1,889 1,233 715 602 57,091 125 7,273 11,329 5,400 4,238 3,126 2,089 1,511 3,470 38,434
Oklahoma 81 4,260 5,392 1,903 1,060 845 489 354 298 14,603 268 2,414 4,378 1,966 1,488 901 528 315 462 12,451
Oregon 55 6,360 4,414 1,021 689 455 292 127 66 13,424 223 2,540 5,417 2,931 2,047 1,433 859 611 1,097 16,935
Pennsylvania - 12,865 12,525 4,153 2,735 1,551 835 667 1,081 36,412 32 5,779 14,240 9,903 7,429 5,566 3,652 2,539 5,254 54,363
Rhode Island - 2,406 1,263 259 128 106 95 25 23 4,305 147 1,215 1,104 726 721 739 600 529 1,402 7,036
South Carolina - 11,440 4,921 1,453 848 411 106 72 11 19,262 725 2,096 8,059 5,026 3,579 2,364 1,250 757 862 23,993
South Dakota - 542 1,123 300 144 64 23 7 - 2,204 18 80 342 283 252 199 176 103 143 1,579
Tennessee 10 25,345 7,537 2,487 1,134 674 267 183 205 37,831 41 10,931 13,336 5,366 3,567 2,304 1,271 997 2,047 39,819
Texas 416 26,725 46,276 23,780 15,084 8,807 3,709 1,638 1,178 127,198 1,590 21,573 52,546 32,407 23,213 15,886 9,586 7,144 15,390 177,744
Utah - 3,725 8,813 3,382 2,252 1,410 447 208 147 20,384 - 2,657 5,408 2,907 1,683 994 467 300 456 14,871
Vermont - 558 439 78 24 15 16 4 1 1,135 20 121 300 151 110 86 34 44 59 905
Virginia - 11,888 18,914 5,458 2,261 1,365 632 319 114 40,954 2 4,571 15,190 8,698 6,541 4,536 2,653 1,744 1,842 45,775
Washington - 10,855 9,699 3,269 1,654 1,164 511 383 270 27,805 178 5,373 10,618 5,802 4,415 3,319 2,156 1,729 3,791 37,204
West Virginia 1 3,310 2,325 582 509 403 240 137 339 7,843 21 643 1,919 974 543 361 188 150 307 5,086
Wisconsin - 4,573 6,362 3,542 2,426 1,364 651 235 94 19,247 666 1,443 4,527 4,543 4,489 3,935 2,322 1,900 3,731 26,890
Wyoming - 460 409 246 112 73 42 37 27 1,405 27 205 418 261 180 122 88 74 108 1,456
U.S. Total 3,441 494,782 435,389 169,389 106,034 67,076 34,736 20,030 22,744 1,350,180 18,070 275,064 484,831 263,204 195,492 141,805 89,726 68,302 163,922 1,682,345
Puerto Rico 92 144 2,080 1,945 1,819 1,505 1,103 916 1,951 11,462 189 22 646 736 986 1,261 1,184 1,112 3,625 9,573
Grand Total 3,533 494,926 437,468 171,334 107,853 68,581 35,839 20,946 24,694 1,361,642 18,259 275,086 485,477 263,940 196,478 143,065 90,910 69,414 167,547 1,691,918

NATIONAL HIGHWAY SYSTEM LENGTH - 2020
  DAILY TRAVEL BY MEASURED PAVEMENT ROUGHNESS - URBAN

October 26, 2021

(THOUSANDS)

INTERNATIONAL ROUGHNESS INDEX (IRI) (1)

Table HM-47A (Sheet 4 of 4)
STATE TOTAL URBAN NHS
NOT REPORTED (2) < 60 60-94 95-119 120-144 145-170 171-194 195-220 > 220 TOTAL REPORTED
Alabama 194 21,603 14,520 4,898 2,887 1,805 950 779 965 48,406
Alaska 11 1,551 1,196 602 367 205 87 74 108 4,190
Arizona 1,957 19,057 16,393 6,019 4,290 2,853 1,818 1,092 1,336 52,858
Arkansas - 5,760 7,885 4,004 2,447 1,628 1,007 804 1,273 24,807
California 7,308 50,091 114,776 74,084 62,847 46,601 28,544 21,085 56,999 455,027
Colorado 1 7,815 18,780 10,908 8,370 5,094 3,060 1,868 3,297 59,191
Connecticut 216 14,983 17,203 5,765 3,610 2,084 1,101 658 1,128 46,532
Delaware 26 1,685 4,357 1,753 756 584 329 184 291 9,938
District of Columbia 33 120 480 360 389 284 365 371 1,711 4,080
Florida 130 91,143 82,436 27,032 13,941 8,371 3,793 2,140 2,815 231,673
Georgia - 56,802 34,056 11,545 6,556 3,640 1,754 1,053 1,247 116,653
Hawaii 132 523 2,136 1,848 1,713 1,471 959 655 1,074 10,379
Idaho 32 3,453 2,920 746 456 274 177 72 287 8,386
Illinois 14 20,246 34,249 15,530 11,566 8,755 5,481 3,905 7,634 107,366
Indiana 72 13,646 11,227 5,635 3,556 2,124 893 557 542 38,179
Iowa 160 3,398 5,089 2,868 1,954 1,333 764 617 1,132 17,154
Kansas 54 6,735 4,818 2,159 1,351 805 531 288 339 17,026
Kentucky 539 10,488 9,703 4,666 2,583 1,502 768 404 385 30,499
Louisiana 1,156 7,988 9,728 5,524 5,275 4,764 2,952 2,153 3,440 41,824
Maine 105 2,064 1,261 471 322 224 138 80 177 4,736
Maryland 132 23,098 25,861 8,298 4,885 3,585 2,273 1,944 4,841 74,784
Massachusetts 630 33,904 15,062 6,439 5,246 4,985 3,427 2,667 8,305 80,035
Michigan 581 11,969 32,802 14,787 9,954 7,252 4,765 3,724 7,654 92,907
Minnesota 7 12,102 16,902 6,376 2,781 1,627 809 374 362 41,333
Mississippi - 9,266 7,384 3,262 2,205 1,535 939 616 1,074 26,282
Missouri - 25,132 17,548 6,587 4,185 3,050 1,644 1,153 1,551 60,849
Montana - 1,174 1,330 575 374 337 184 135 322 4,431
Nebraska 38 1,276 3,447 1,961 1,284 992 685 608 1,862 12,114
Nevada - 6,773 6,427 3,794 3,316 1,679 773 374 455 23,591
New Hampshire 4 7,887 1,855 579 346 254 138 90 182 11,332
New Jersey - 27,733 33,064 11,539 8,316 6,131 4,530 3,734 8,560 103,607
New Mexico - 4,499 3,432 1,480 1,181 813 436 284 525 12,650
New York 2,522 9,930 33,489 21,811 15,578 11,639 8,548 6,932 18,252 126,180
North Carolina 711 34,663 30,495 13,271 7,190 3,840 2,182 1,204 1,468 94,313
North Dakota 2 743 1,104 540 454 291 150 93 194 3,569
Ohio 223 33,597 28,593 11,023 7,677 5,015 3,322 2,226 4,072 95,525
Oklahoma 349 6,675 9,770 3,869 2,549 1,747 1,017 669 760 27,054
Oregon 278 8,900 9,831 3,952 2,736 1,888 1,151 738 1,164 30,359
Pennsylvania 32 18,644 26,764 14,056 10,164 7,117 4,488 3,206 6,335 90,775
Rhode Island 147 3,621 2,367 985 848 845 695 554 1,425 11,341
South Carolina 725 13,536 12,979 6,479 4,428 2,776 1,356 829 873 43,255
South Dakota 18 622 1,466 583 397 263 199 110 143 3,783
Tennessee 50 36,276 20,873 7,852 4,700 2,978 1,538 1,181 2,252 77,650
Texas 2,006 48,297 98,822 56,188 38,297 24,693 13,296 8,782 16,568 304,942
Utah - 6,382 14,221 6,289 3,935 2,403 914 509 603 35,255
Vermont 20 679 740 229 133 100 50 49 60 2,040
Virginia 2 16,460 34,104 14,156 8,803 5,901 3,285 2,064 1,957 86,729
Washington 178 16,228 20,318 9,071 6,069 4,483 2,667 2,112 4,061 65,008
West Virginia 22 3,953 4,244 1,555 1,052 764 428 287 646 12,929
Wisconsin 666 6,016 10,889 8,086 6,915 5,298 2,973 2,135 3,825 46,137
Wyoming 27 665 828 507 292 195 130 111 135 2,862
U.S. Total 21,511 769,846 920,220 432,593 301,526 208,881 124,462 88,332 186,666 3,032,525
Puerto Rico 281 166 2,726 2,681 2,806 2,765 2,288 2,029 5,576 21,036
Grand Total 21,792 770,012 922,945 435,273 304,332 211,646 126,749 90,361 192,241 3,053,560

(1) Data are reported as the International Roughness Index (IRI) in inches per mile. Reference: World Bank Technical Paper Number 46, 1986. Lower IRI represents smoother riding roadways. To obtain a comprehensive assessment of pavement condition, additional measures of pavement distress are needed. Travel is in thousands.

(2) May include sections entirely on structures and unpaved miles.

 

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