Highway Statistics Series
Highway Statistics 2023
FEDERAL-AID LENGTH - 2023
MILES BY MEASURED PAVEMENT ROUGHNESS / PRESENT SERVICEABILITY RATING
JANUARY 2025
| STATE | INTERNATIONAL ROUGHNESS INDEX (IRI) / PRESENT SERVICEABILITY RATING (PSR)(1) | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| RURAL | URBAN | TOTAL | |||||||||||||
| NOT REPORTED(2) | IRI: <95 PSR: >3.4 |
IRI: 95-170 PSR: 2.6-3.4 |
IRI: >170 PSR: <2.6 |
TOTAL REPORTED | NOT REPORTED(2) | IRI: <95 PSR: >3.4 |
IRI: 95-170 PSR: 2.6-3.4 |
IRI: >170 PSR: <2.6 |
TOTAL REPORTED | NOT REPORTED(2) | IRI: <95 PSR: >3.4 |
IRI: 95-170 PSR: 2.6-3.4 |
IRI: >170 PSR: <2.6 |
TOTAL REPORTED | |
| Alabama | 3,594 | 10,091 | 4,411 | 721 | 15,222 | 1,426 | 2,974 | 2,443 | 1,107 | 6,524 | 5,020 | 13,065 | 6,853 | 1,828 | 21,746 |
| Alaska | 373 | 1,280 | 969 | 526 | 2,776 | 12 | 290 | 301 | 296 | 887 | 385 | 1,570 | 1,270 | 822 | 3,662 |
| Arizona | 105 | 3,498 | 3,189 | 933 | 7,619 | 296 | 1,517 | 4,096 | 3,333 | 8,946 | 400 | 5,014 | 7,285 | 4,266 | 16,565 |
| Arkansas | 40 | 7,588 | 5,654 | 3,771 | 17,013 | 46 | 1,821 | 2,587 | 774 | 5,182 | 86 | 9,409 | 8,241 | 4,545 | 22,195 |
| California | 120 | 6,509 | 5,169 | 2,649 | 14,327 | 350 | 2,781 | 4,274 | 4,653 | 11,708 | 470 | 9,290 | 9,443 | 7,303 | 26,036 |
| Colorado | - | 4,450 | 4,480 | 1,877 | 10,807 | - | 1,173 | 2,210 | 1,998 | 5,381 | - | 5,623 | 6,691 | 3,875 | 16,189 |
| Connecticut | - | 387 | 665 | 194 | 1,246 | 1 | 1,148 | 2,280 | 1,722 | 5,150 | 1 | 1,535 | 2,945 | 1,916 | 6,396 |
| Delaware | 4 | 346 | 228 | 32 | 605 | 17 | 375 | 380 | 217 | 972 | 21 | 720 | 608 | 249 | 1,577 |
| District of Columbia | - | - | - | - | - | 12 | 3 | 33 | 396 | 433 | 12 | 3 | 33 | 396 | 433 |
| Florida | 7 | 6,863 | 2,445 | 436 | 9,744 | 70 | 7,634 | 7,140 | 3,087 | 17,861 | 77 | 14,498 | 9,585 | 3,523 | 27,606 |
| Georgia | - | 11,413 | 6,824 | 940 | 19,177 | - | 5,832 | 4,134 | 1,023 | 10,989 | - | 17,244 | 10,959 | 1,964 | 30,166 |
| Hawaii | 2 | 169 | 220 | 166 | 555 | 8 | 184 | 376 | 447 | 1,007 | 9 | 353 | 596 | 613 | 1,562 |
| Idaho | 4,502 | 3,226 | 919 | 225 | 4,370 | 1,431 | 308 | 155 | 81 | 544 | 5,933 | 3,534 | 1,073 | 306 | 4,914 |
| Illinois | 1 | 11,384 | 5,170 | 1,015 | 17,568 | 10 | 3,236 | 5,431 | 5,128 | 13,794 | 11 | 14,620 | 10,600 | 6,143 | 31,363 |
| Indiana | 7,635 | 4,968 | 1,430 | 118 | 6,517 | 6,094 | 1,841 | 585 | 119 | 2,546 | 13,729 | 6,810 | 2,015 | 237 | 9,063 |
| Iowa | 16,730 | 2,476 | 1,293 | 252 | 4,021 | 2,962 | 418 | 473 | 195 | 1,085 | 19,692 | 2,894 | 1,765 | 447 | 5,106 |
| Kansas | 7,895 | 9,701 | 2,602 | 428 | 12,731 | 3,313 | 561 | 236 | 91 | 888 | 11,208 | 10,263 | 2,838 | 519 | 13,619 |
| Kentucky | 262 | 5,064 | 4,618 | 607 | 10,289 | 753 | 1,174 | 1,525 | 635 | 3,334 | 1,015 | 6,238 | 6,143 | 1,242 | 13,623 |
| Louisiana | 15 | 3,249 | 3,517 | 1,604 | 8,370 | 99 | 1,533 | 2,482 | 2,199 | 6,214 | 113 | 4,781 | 5,999 | 3,803 | 14,584 |
| Maine | 5 | 2,741 | 1,701 | 823 | 5,264 | 3 | 420 | 402 | 227 | 1,049 | 7 | 3,160 | 2,103 | 1,050 | 6,313 |
| Maryland | 1 | 1,621 | 733 | 194 | 2,549 | 11 | 1,483 | 1,985 | 2,154 | 5,622 | 13 | 3,105 | 2,718 | 2,348 | 8,171 |
| Massachusetts | 511 | 461 | 306 | 43 | 810 | 5,591 | 1,380 | 1,564 | 1,243 | 4,187 | 6,102 | 1,841 | 1,870 | 1,286 | 4,997 |
| Michigan | 245 | 11,885 | 6,633 | 2,663 | 21,182 | 681 | 3,953 | 3,349 | 4,125 | 11,427 | 926 | 15,839 | 9,982 | 6,788 | 32,609 |
| Minnesota | 8 | 15,721 | 7,625 | 2,000 | 25,346 | 617 | 2,890 | 3,538 | 1,112 | 7,539 | 625 | 18,611 | 11,162 | 3,112 | 32,885 |
| Mississippi | 13 | 5,278 | 7,629 | 4,867 | 17,774 | 10 | 910 | 1,439 | 1,626 | 3,975 | 23 | 6,188 | 9,068 | 6,493 | 21,750 |
| Missouri | 4 | 7,435 | 11,669 | 4,914 | 24,017 | 28 | 1,739 | 2,444 | 2,636 | 6,820 | 32 | 9,174 | 14,113 | 7,550 | 30,837 |
| Montana | 62 | 6,908 | 3,868 | 1,014 | 11,790 | 10 | 303 | 348 | 369 | 1,020 | 73 | 7,211 | 4,215 | 1,383 | 12,810 |
| Nebraska | 1,330 | 8,196 | 2,628 | 551 | 11,374 | 97 | 983 | 293 | 205 | 1,481 | 1,427 | 9,179 | 2,921 | 755 | 12,855 |
| Nevada | - | 2,791 | 1,666 | 371 | 4,829 | - | 888 | 1,070 | 736 | 2,695 | - | 3,679 | 2,736 | 1,107 | 7,523 |
| New Hampshire | - | 1,231 | 622 | 293 | 2,147 | - | 620 | 534 | 323 | 1,478 | - | 1,851 | 1,157 | 616 | 3,625 |
| New Jersey | - | 792 | 502 | 22 | 1,316 | 1 | 4,728 | 4,023 | 789 | 9,540 | 1 | 5,520 | 4,525 | 811 | 10,856 |
| New Mexico | 35 | 3,162 | 3,273 | 2,907 | 9,341 | 68 | 552 | 1,062 | 1,052 | 2,666 | 103 | 3,714 | 4,334 | 3,959 | 12,007 |
| New York | 56 | 6,902 | 3,888 | 652 | 11,442 | 292 | 3,653 | 6,085 | 6,036 | 15,775 | 349 | 10,556 | 9,972 | 6,689 | 27,217 |
| North Carolina | 57 | 6,199 | 7,544 | 1,207 | 14,950 | 120 | 2,139 | 4,441 | 1,664 | 8,244 | 177 | 8,339 | 11,985 | 2,871 | 23,194 |
| North Dakota | - | 9,617 | 3,213 | 572 | 13,403 | 6 | 237 | 322 | 381 | 940 | 6 | 9,854 | 3,535 | 953 | 14,343 |
| Ohio | 40 | 11,186 | 4,327 | 666 | 16,179 | 287 | 4,598 | 5,439 | 3,619 | 13,657 | 327 | 15,784 | 9,767 | 4,285 | 29,836 |
| Oklahoma | 2,625 | 7,983 | 7,943 | 5,574 | 21,499 | 2,482 | 909 | 1,136 | 1,032 | 3,078 | 5,107 | 8,892 | 9,079 | 6,606 | 24,577 |
| Oregon | 76 | 7,827 | 3,330 | 1,189 | 12,347 | 29 | 3,366 | 1,260 | 410 | 5,036 | 104 | 11,193 | 4,590 | 1,599 | 17,383 |
| Pennsylvania | 349 | 5,927 | 5,493 | 2,819 | 14,239 | 1,176 | 2,785 | 5,520 | 4,613 | 12,918 | 1,524 | 8,712 | 11,013 | 7,432 | 27,157 |
| Rhode Island | 1 | 111 | 143 | 104 | 358 | 23 | 198 | 500 | 667 | 1,365 | 24 | 309 | 643 | 771 | 1,723 |
| South Carolina | 563 | 5,361 | 5,742 | 2,378 | 13,481 | 1,211 | 1,585 | 3,006 | 1,424 | 6,016 | 1,774 | 6,946 | 8,748 | 3,802 | 19,497 |
| South Dakota | 24 | 10,553 | 2,884 | 453 | 13,890 | 18 | 831 | 108 | 44 | 983 | 41 | 11,384 | 2,992 | 497 | 14,872 |
| Tennessee | 204 | 1,929 | 357 | 63 | 2,350 | 134 | 1,769 | 635 | 233 | 2,636 | 338 | 3,698 | 992 | 296 | 4,986 |
| Texas | 415 | 22,505 | 25,791 | 6,763 | 55,060 | 746 | 7,631 | 12,262 | 13,867 | 33,760 | 1,161 | 30,136 | 38,053 | 20,630 | 88,820 |
| Utah | 10 | 3,003 | 1,973 | 495 | 5,471 | 8 | 746 | 575 | 309 | 1,629 | 18 | 3,748 | 2,548 | 804 | 7,100 |
| Vermont | 1 | 489 | 78 | 17 | 585 | 4 | 124 | 56 | 24 | 204 | 5 | 614 | 134 | 41 | 788 |
| Virginia | 1,257 | 4,143 | 5,802 | 1,741 | 11,686 | 2,039 | 1,713 | 3,231 | 1,368 | 6,312 | 3,296 | 5,855 | 9,033 | 3,109 | 17,998 |
| Washington | 589 | 3,270 | 5,972 | 2,554 | 11,795 | 113 | 1,381 | 3,335 | 3,326 | 8,041 | 702 | 4,651 | 9,307 | 5,879 | 19,837 |
| West Virginia | 21 | 1,150 | 1,034 | 144 | 2,329 | 10 | 424 | 345 | 121 | 891 | 31 | 1,575 | 1,380 | 266 | 3,220 |
| Wisconsin | 1,966 | 9,632 | 5,048 | 2,831 | 17,510 | 699 | 1,204 | 2,552 | 3,276 | 7,032 | 2,666 | 10,837 | 7,600 | 6,107 | 24,543 |
| Wyoming | 56 | 4,229 | 1,334 | 271 | 5,834 | 38 | 260 | 124 | 50 | 434 | 94 | 4,489 | 1,459 | 321 | 6,268 |
| U.S. Total | 51,810 | 282,901 | 194,553 | 67,649 | 545,102 | 33,451 | 91,207 | 114,125 | 86,563 | 291,894 | 85,260 | 374,107 | 308,677 | 154,212 | 836,996 |
| Puerto Rico | 10 | 24 | 96 | 581 | 700 | 57 | 74 | 368 | 2,011 | 2,454 | 67 | 98 | 464 | 2,592 | 3,154 |
| Grand Total | 51,820 | 282,924 | 194,648 | 68,230 | 545,803 | 33,508 | 91,281 | 114,493 | 88,574 | 294,347 | 85,327 | 374,205 | 309,141 | 156,804 | 840,150 |
- 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. The "Present Serviceability Rating" (PSR) is a subjective, primarily ride-based system adapted from the "AASHO ROAD TESTS" conducted in the late 1950's and early 1960's. Reference: Highway Special Report 61E, 1962. The PSR values range from 0.1 to 5.0; higher PSR values represent smoother riding roadways.
- May include sections entirely on structures.