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FHWA Home / Policy & Governmental Affairs / Highway Policy Information / Table HM-63 - Highway Statistics 2017

Highway Statistics 2017


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Functional System Length - 2017 (1)
    Miles by Measured Pavement Roughness / Present Serviceability Rating

August 23, 2018
Table HM-63
Sheet 1 of 3

STATE RURAL MAJOR COLLECTOR
INTERNATIONAL ROUGHNESS INDEX (2) PRESENT SERVICEABILITY RATING (3) TOTAL
<60 60-94 95-170 171-220 >220 TOTAL >3.9 3.5-3.9 2.6-3.4 2.1-2.5 <=2.0 TOTAL
Alabama 794 4,234 4,342 564 780 10,715 - - - - - - 10,715
Alaska 75 248 251 73 83 730 - - - - - - 730
Arizona 544 968 1,301 311 118 3,242 - - - - - - 3,242
Arkansas - - - - - - - - 584 143 - 727 727
California - 1,009 4,605 2,127 3,372 11,113 - - - - - - 11,113
Colorado 165 1,068 2,328 517 356 4,434 23 - - - - 23 4,457
Connecticut 5 199 434 99 120 857 - - - - - - 857
Delaware 70 124 164 20 11 389 - - - - - - 389
Dist. of Columbia - - - - - - - - - - - - -
Florida 600 746 463 46 23 1,877 360 526 1,178 60 24 2,148 4,025
Georgia 119 1,694 1,589 123 18 3,544 - - - - - - 3,544
Hawaii 0 10 101 56 53 220 - - - - - - 220
Idaho 168 336 210 24 2 740 595 663 1,529 735 275 3,797 4,537
Illinois 852 3,384 3,907 684 100 8,927 - - - - - - 8,927
Indiana 744 2,228 1,760 385 152 5,270 - - - - - - 5,270
Iowa - 0 0 - - 0 - - - - - - 0
Kansas 819 1,894 1,587 171 52 4,523 267 1,614 4,381 973 586 7,822 12,345
Kentucky 65 1,499 3,243 334 117 5,259 - - - - - - 5,259
Louisiana 158 1,537 1,761 552 663 4,671 - - - - - - 4,671
Maine 258 727 1,296 458 461 3,200 - - - - - - 3,200
Maryland - - - - - - - - - - - - -
Massachusetts 12 75 99 33 55 274 - - - - - - 274
Michigan 2,114 3,713 5,490 1,635 1,678 14,630 - - - - - - 14,630
Minnesota 2,624 4,903 4,342 1,027 1,292 14,188 - - - - - - 14,188
Mississippi 161 1,850 5,440 2,234 1,990 11,675 - - - - - - 11,675
Missouri 147 2,978 8,429 3,243 1,389 16,186 - - - - - - 16,186
Montana 328 1,450 2,255 441 302 4,776 - - - - - - 4,776
Nebraska 1,498 1,750 1,182 239 125 4,793 1,277 440 437 256 148 2,558 7,352
Nevada 124 529 1,131 226 99 2,109 - - - - - - 2,109
New Hampshire 83 220 433 125 178 1,040 - - 2 - - 2 1,042
New Jersey - 20 393 31 - 444 52 82 191 5 - 331 775
New Mexico 82 223 1,679 1,148 959 4,091 - - - - - - 4,091
New York 205 2,545 1,036 9 - 3,795 - - - - - - 3,795
North Carolina 131 2,635 3,052 381 285 6,484 - - - - - - 6,484
North Dakota 903 1,912 1,884 325 361 5,386 - - - - - - 5,386
Ohio 2,591 3,949 3,667 499 302 11,009 8 - 23 0 0 31 11,040
Oklahoma 631 3,778 7,615 3,017 3,647 18,689 - - - - 423 423 19,112
Oregon - 353 1,179 470 117 2,119 1,700 1,914 1,248 98 263 5,222 7,341
Pennsylvania 336 1,641 2,909 1,095 1,359 7,339 - - - - - - 7,339
Rhode Island - 7 75 42 49 172 - - - - - - 172
South Carolina 624 2,650 4,849 1,154 736 10,014 - - - - - - 10,014
South Dakota 381 1,628 4,102 1,026 206 7,343 29 68 81 - - 178 7,521
Tennessee - - - - - - - - - - - - -
Texas - - - - - - 2,534 2,154 7,106 20,096 3,244 35,135 35,135
Utah 175 671 1,382 420 244 2,891 - - - - - - 2,891
Vermont 121 533 748 187 245 1,833 - - - - - - 1,833
Virginia 37 690 1,466 288 161 2,643 - - - - - - 2,643
Washington 68 1,112 4,620 1,473 741 8,014 - - - - - - 8,014
West Virginia 1 719 2,526 1,090 1,151 5,487 - - - - - - 5,487
Wisconsin 1,113 2,752 5,433 1,126 1,642 12,067 - - - - - - 12,067
Wyoming 525 968 890 241 116 2,739 - - - - 4 4 2,744
U.S. Total 20,454 68,159 107,648 29,771 25,911 251,943 6,846 7,461 16,761 22,366 4,967 58,401 310,344
Puerto Rico (4) - - - - - - - - - - - - -
Grand Total 20,454 68,159 107,648 29,771 25,911 251,943 6,846 7,461 16,761 22,366 4,967 58,401 310,344

August 23, 2018
Table HM-63
Sheet 2 of 3

STATE URBAN MINOR ARTERIAL
INTERNATIONAL ROUGHNESS INDEX (2) PRESENT SERVICEABILITY RATING (3) TOTAL
<60 60-94 95-170 171-220 >220 TOTAL >3.9 3.5-3.9 2.6-3.4 2.1-2.5 <=2.0 TOTAL
Alabama 202 671 862 204 282 2,221 - - - - - - 2,221
Alaska 20 53 67 21 14 174 - - - - - - 174
Arizona 64 375 1,299 461 250 2,448 - - - - - - 2,448
Arkansas 0 5 14 5 1 25 29 42 503 191 64 829 854
California 47 748 4,304 2,154 3,110 10,364 - - - - - - 10,364
Colorado 14 184 784 405 403 1,790 8 - - 2 - 10 1,800
Connecticut 20 262 791 310 289 1,672 - - - - - - 1,672
Delaware 15 55 86 30 35 221 - - - - - - 221
Dist. of Columbia - - 5 20 138 163 - - - - - - 163
Florida 333 963 848 160 113 2,417 472 553 583 100 78 1,785 4,203
Georgia 397 897 636 99 123 2,153 - - - - - - 2,153
Hawaii 6 28 69 36 53 192 - - - - - - 192
Idaho 6 16 34 2 2 59 147 118 157 110 28 560 619
Illinois 73 696 1,979 781 625 4,154 - - - - - - 4,154
Indiana 303 528 882 294 275 2,283 - - - - - - 2,283
Iowa - - 4 0 1 5 - - - - - - 5
Kansas 58 183 618 247 246 1,352 - - - - - - 1,352
Kentucky 77 303 556 136 106 1,178 - - - - - - 1,178
Louisiana 47 326 661 278 325 1,637 - - - - - - 1,637
Maine 23 66 100 31 31 251 - - - - - - 251
Maryland - 2 13 2 2 18 - - - - - - 18
Massachusetts 6 188 747 318 274 1,532 - - - - - - 1,532
Michigan 139 720 1,996 890 967 4,713 - - - - - - 4,713
Minnesota 288 566 830 420 232 2,336 - - - - - - 2,336
Mississippi 40 171 423 204 246 1,085 - - - - - - 1,085
Missouri 26 268 951 355 373 1,972 - - - - - - 1,972
Montana 8 66 110 44 58 285 - - - - - - 285
Nebraska 33 37 66 27 42 205 216 75 153 30 - 474 679
Nevada 127 233 348 108 76 892 - - - - - - 892
New Hampshire 32 114 187 66 88 488 - - 2 - - 2 490
New Jersey 80 130 682 604 718 2,213 509 154 613 128 15 1,419 3,632
New Mexico 11 99 351 118 128 707 5 - - - - 5 712
New York 82 299 808 220 899 2,308 - - - - - - 2,308
North Carolina 30 783 1,618 404 304 3,139 - - - - - - 3,139
North Dakota 9 33 103 43 75 263 - - - - - - 263
Ohio 200 806 1,553 540 756 3,856 39 7 55 3 11 116 3,971
Oklahoma 19 81 918 640 513 2,169 17 5 23 12 18 74 2,243
Oregon 5 73 73 39 8 198 408 324 321 23 12 1,088 1,285
Pennsylvania 66 610 1,680 813 729 3,897 - - - - - - 3,897
Rhode Island - 15 139 82 107 342 1 - - - - 1 343
South Carolina 38 310 998 238 141 1,726 - - - - - - 1,726
South Dakota 1 29 177 163 37 406 - 1 12 1 1 14 420
Tennessee 18 36 15 7 9 84 - - - - - - 84
Texas 5 43 28 10 12 99 1,373 986 3,048 1,535 906 7,848 7,947
Utah 9 90 289 112 132 632 - - - - - - 632
Vermont 9 53 52 16 14 144 - - - - - - 144
Virginia 16 274 712 200 100 1,302 - - - - - - 1,302
Washington 62 428 1,113 456 622 2,681 - - - - - - 2,681
West Virginia 2 165 338 112 102 719 - - - - - - 719
Wisconsin 35 198 800 553 1,040 2,627 - - - - - - 2,627
Wyoming 14 54 65 21 28 182 36 25 3 1 2 67 249
U.S. Total 3,115 13,333 32,782 13,498 15,251 77,978 3,260 2,288 5,473 2,136 1,135 14,292 92,271
Puerto Rico (4) - 1 11 13 40 65 - - - - - - 65
Grand Total 3,115 13,334 32,793 13,511 15,291 78,044 3,260 2,288 5,473 2,136 1,135 14,292 92,336

August 23, 2018
Table HM-63
Sheet 3 of 3

STATE URBAN MAJOR AND MINOR COLLECTOR
INTERNATIONAL ROUGHNESS INDEX (2) PRESENT SERVICEABILITY RATING (3) TOTAL
<60 60-94 95-170 171-220 >220 TOTAL >3.9 3.5-3.9 2.6-3.4 2.1-2.5 <=2.0 TOTAL
Alabama 84 640 1,550 537 817 3,627 - - - - - - 3,627
Alaska 14 69 98 38 60 279 - - - - - - 279
Arizona 17 101 827 428 522 1,894 - - - - - - 1,894
Arkansas - - 0 0 0 1 47 139 737 505 221 1,651 1,651
California 21 360 3,394 2,825 5,392 11,991 - - - - - - 11,991
Colorado 49 170 747 417 502 1,886 0 - - 3 - 4 1,889
Connecticut 4 105 887 474 659 2,129 - - - - - - 2,129
Delaware 11 92 209 74 88 473 - - - - - - 473
Dist. of Columbia - 0 3 17 131 151 - - - - - - 151
Florida 115 970 1,966 600 630 4,281 880 1,318 1,395 215 211 4,019 8,300
Georgia 26 163 85 18 9 301 - - - - - - 301
Hawaii 3 11 151 118 168 451 - - - - - - 451
Idaho 0 1 2 0 1 4 176 97 253 95 38 659 664
Illinois 146 685 2,118 1,245 1,500 5,694 - - - - - - 5,694
Indiana 47 188 362 138 118 854 - - - - - - 854
Iowa - - 0 - - 0 - - - - - - 0
Kansas 42 135 748 341 695 1,961 - - 4 - 2 6 1,966
Kentucky 14 111 462 155 161 904 - - - - - - 904
Louisiana 53 309 762 316 488 1,927 - - - - - - 1,927
Maine 16 84 211 76 85 472 - - - - - - 472
Maryland - - 0 0 0 0 - - - - - - 0
Massachusetts - - 205 2 - 207 - - - - - - 207
Michigan 57 451 1,306 694 1,055 3,564 - - - - - - 3,564
Minnesota 109 465 1,025 500 393 2,491 - - - - - - 2,491
Mississippi 3 95 478 330 678 1,584 - - - - - - 1,584
Missouri - 120 917 450 669 2,156 - - - - - - 2,156
Montana 10 33 106 89 184 423 - - - - - - 423
Nebraska - - 0 1 1 2 156 84 161 45 8 455 456
Nevada 27 181 462 223 264 1,159 - - - - - - 1,159
New Hampshire 2 81 204 92 150 529 - - 6 - - 6 536
New Jersey 4 32 383 532 972 1,923 250 149 719 250 33 1,400 3,323
New Mexico 49 167 443 196 278 1,132 - - - - - - 1,132
New York 20 239 1,102 268 278 1,907 - - - - - - 1,907
North Carolina 13 564 1,949 455 391 3,371 - - - - - - 3,371
North Dakota 1 5 79 72 139 296 - - - - - - 296
Ohio 183 947 2,326 919 1,418 5,793 83 11 43 11 13 161 5,954
Oklahoma 14 42 455 354 583 1,448 46 29 38 49 15 176 1,624
Oregon - 30 21 24 10 86 769 885 713 128 33 2,529 2,615
Pennsylvania 22 254 2,252 1,318 1,787 5,632 - - - - - - 5,632
Rhode Island - 6 166 126 269 568 - - 1 3 0 4 573
South Carolina 24 387 1,261 534 561 2,767 - - - - - - 2,767
South Dakota - 3 119 120 79 320 - 5 5 - - 10 329
Tennessee - 1 2 - 2 4 - - - - - - 4
Texas - 12 40 28 70 151 2,067 2,387 5,343 4,363 2,483 16,642 16,792
Utah 5 106 513 362 542 1,527 - - - - - - 1,527
Vermont 4 56 99 46 43 248 - - - - - - 248
Virginia 1 119 444 121 83 768 - - - - - - 768
Washington 17 204 1,043 555 1,062 2,880 - - - - - - 2,880
West Virginia 0 76 340 216 313 946 - - - - - - 946
Wisconsin 35 70 571 449 1,533 2,658 - - - - - - 2,658
Wyoming 14 76 97 43 32 262 172 109 18 9 24 332 593
U.S. Total 1,275 9,019 32,990 16,936 25,864 86,085 4,646 5,213 9,435 5,678 3,080 28,053 114,137
Puerto Rico (4) - - 1 2 15 18 - - - - - - 18
Grand Total 1,275 9,019 32,991 16,938 25,879 86,102 4,646 5,213 9,435 5,678 3,080 28,053 114,155

(1) Some States elect to report International Roughness Index (IRI) for these systems; some report IRI for some sections and PSR for some sections. PSR is ignored for sections coded with both IRI and PSR. Some differences from other tables may be noted because these are estimated from sample data. Excludes unpaved mileage. Includes structures.

(2) Data are reported as the 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.

(3) 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.

(4) Data may not be complete.

 

Page last modified on April 1, 2019
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