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FHWA Home / Policy & Governmental Affairs / Highway Policy Information / Table HM-63 - Highway Statistics 2019

Highway Statistics Series

Highway Statistics 2019


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Functional System Length - 2019 (1)
    Miles by Measured Pavement Roughness / Present Serviceability Rating

September 30, 2020

Table HM-63 (Sheet 1 of 3)
STATE RURAL MAJOR COLLECTOR
INTERNATIONAL ROUGHNESS INDEX (2) PRESENT SERVICEABILITY RATING (3) TOTAL REPORTED
<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 1,533 4,839 4,410 620 735 12,137 - - - - - - 12,137
Alaska 98 297 288 73 105 861 - - - - - - 861
Arizona 340 731 1,440 367 229 3,108 - - - - - - 3,108
Arkansas - - - - - - 1,045 741 4,247 5,073 295 11,400 11,400
California 531 1,506 3,648 1,658 1,969 9,313 - - - - - - 9,313
Colorado 158 1,049 2,306 553 401 4,467 - - - - - - 4,467
Connecticut 3 150 457 108 138 856 - - - - - - 856
Delaware 72 127 160 20 7 387 - - - - - - 387
District of Columbia - - - - - - - - - - - - -
Florida 737 1,373 1,448 208 184 3,950 - 6 51 16 - 73 4,023
Georgia 703 5,195 4,996 513 186 11,594 - - - - - - 11,594
Hawaii 1 12 98 51 58 220 - - - - - - 220
Idaho 77 271 158 21 - 526 457 809 2,085 698 98 4,146 4,672
Illinois 976 3,418 3,650 603 288 8,934 - - - - - - 8,934
Indiana 288 2,972 4,024 1,400 1,093 9,778 - - - - - - 9,778
Iowa - - - - - - - - - - - - -
Kansas 964 2,131 1,375 200 48 4,717 - - - - - - 4,717
Kentucky 162 1,582 3,167 331 102 5,344 - - - - - - 5,344
Louisiana 161 1,784 1,888 253 792 4,879 21 - 19 - - 39 4,919
Maine 296 761 1,286 441 484 3,268 - - - - - - 3,268
Maryland 214 355 570 96 60 1,295 - - - - - - 1,295
Massachusetts 3 144 182 25 8 363 - - - - - - 363
Michigan 1,684 4,197 5,144 1,329 1,144 13,499 88 1 3 11 75 178 13,677
Minnesota 1,945 4,361 5,693 1,528 811 14,338 - - - - - - 14,338
Mississippi 165 1,854 5,871 2,150 1,685 11,726 - - - - - - 11,726
Missouri 109 2,746 8,788 3,013 1,568 16,225 - - 12 - - 12 16,237
Montana 624 1,507 1,996 407 336 4,870 - - - - - - 4,870
Nebraska 833 601 468 327 151 2,379 - - - - - - 2,379
Nevada 139 519 1,136 222 110 2,126 - - - - - - 2,126
New Hampshire 104 318 390 111 118 1,041 - - - - - - 1,041
New Jersey - 21 390 32 - 443 82 116 134 - - 332 775
New Mexico 93 319 1,861 1,035 1,044 4,351 - - - - - - 4,351
New York 404 2,379 2,209 372 272 5,637 - - - - - - 5,637
North Carolina 162 2,440 4,067 457 229 7,355 - - - - - - 7,355
North Dakota 1,419 3,125 2,277 200 115 7,135 - - - - - - 7,135
Ohio 2,780 4,357 3,141 527 204 11,010 - - - - - 1 11,010
Oklahoma 281 3,045 4,455 406 112 8,299 - - - - - - 8,299
Oregon - 303 939 409 101 1,751 2,153 1,906 1,174 112 142 5,488 7,239
Pennsylvania 246 1,737 2,899 960 1,059 6,900 - - - - - - 6,900
Rhode Island 3 6 73 40 47 168 - - - - - - 168
South Carolina 589 2,969 4,525 1,229 697 10,010 - - - - - - 10,010
South Dakota 325 1,966 3,614 995 255 7,155 116 48 50 11 5 230 7,384
Tennessee - - - - - - - - - - - - -
Texas 841 9,335 18,560 3,161 2,438 34,336 - - - - - - 34,336
Utah 229 824 1,397 376 243 3,068 - - - - - - 3,068
Vermont 114 510 821 193 271 1,909 - - - - - - 1,909
Virginia 74 899 2,368 550 196 4,086 - - - - - - 4,086
Washington 28 1,052 4,774 1,474 676 8,004 - - - - - - 8,004
West Virginia 69 788 2,401 939 1,283 5,480 - - - - - - 5,480
Wisconsin (5) - - - - 131 131 - - - - - - 131
Wyoming 551 1,043 778 168 58 2,598 - - - - - - 2,598
U.S. Total 21,126 81,922 126,587 30,153 22,241 282,028 3,962 3,626 7,775 5,921 615 21,899 303,927
Puerto Rico - - 9 11 36 56 - - - - - - 56
Grand Total 21,126 81,922 126,596 30,163 22,277 282,084 3,962 3,626 7,775 5,921 615 21,899 303,983

 

September 30, 2020

Table HM-63 (Sheet 2 of 3)
STATE URBAN MINOR ARTERIAL
INTERNATIONAL ROUGHNESS INDEX (2) PRESENT SERVICEABILITY RATING (3) TOTAL REPORTED
<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 280 699 862 171 183 2,196 - - - - - - 2,196
Alaska 20 69 69 16 11 185 - - - - - - 185
Arizona 86 375 1,350 416 202 2,429 - - - - - - 2,429
Arkansas 1 5 10 4 - 20 231 234 954 379 11 1,810 1,830
California 134 529 1,081 320 355 2,419 - - - - - - 2,419
Colorado 28 218 742 408 409 1,805 - - - 1 - 1 1,806
Connecticut 17 235 823 311 286 1,672 - - - - - - 1,672
Delaware 26 60 89 24 22 221 - - - - - - 221
District of Columbia - - 6 15 132 153 - - - - - - 153
Florida 344 1,390 1,588 330 241 3,893 177 56 81 7 17 338 4,230
Georgia 519 1,560 2,132 388 206 4,805 - - - - - - 4,805
Hawaii 4 29 69 34 57 192 - - - - - - 192
Idaho 6 18 22 5 1 52 180 124 226 48 5 583 635
Illinois 137 760 1,812 687 709 4,105 - - - - - - 4,105
Indiana 171 729 1,336 447 317 3,001 - - - - - - 3,001
Iowa - - - - - - - - - - - - -
Kansas 58 168 573 239 253 1,291 - - - - - - 1,291
Kentucky 83 326 657 124 88 1,277 - - - - - - 1,277
Louisiana 20 209 562 189 196 1,176 45 - 32 - 33 110 1,286
Maine 22 69 99 24 33 247 - - - - - - 247
Maryland 79 263 679 255 288 1,564 - - - - - - 1,564
Massachusetts 9 191 498 142 152 992 - - - - - - 992
Michigan 149 801 1,973 797 992 4,711 15 4 28 10 55 112 4,823
Minnesota 371 887 798 250 216 2,522 - - - - - - 2,522
Mississippi 51 192 443 185 221 1,092 - - - - - - 1,092
Missouri 48 266 926 412 469 2,121 - - 30 - - 30 2,151
Montana 16 69 108 39 59 291 - - - - - - 291
Nebraska 15 3 17 3 13 50 - - - - - - 50
Nevada 91 210 380 112 98 891 - - - - - - 891
New Hampshire 32 126 190 58 80 486 - - 5 - - 5 491
New Jersey 85 147 687 590 716 2,225 500 275 501 119 11 1,405 3,630
New Mexico 6 72 293 150 189 710 - - - - - - 710
New York 84 934 2,202 945 1,259 5,424 - - - - - - 5,424
North Carolina 30 797 1,799 378 346 3,350 - - - - - - 3,350
North Dakota 7 35 123 57 70 292 - - - - - - 292
Ohio 232 1,028 1,499 474 655 3,888 17 18 3 1 15 54 3,943
Oklahoma 46 44 97 27 15 229 - - - - - - 229
Oregon 5 59 67 32 5 167 516 288 296 18 1 1,119 1,286
Pennsylvania 137 708 1,741 593 631 3,809 - - - - - - 3,809
Rhode Island 1 25 139 79 84 328 1 1 - - - 3 331
South Carolina 51 335 902 231 137 1,656 - - - - - - 1,656
South Dakota 2 22 197 148 54 423 - 4 5 - - 9 432
Tennessee 13 37 20 5 10 86 - - - - - - 86
Texas 225 1,131 2,969 1,453 2,191 7,969 - - - - - - 7,969
Utah 14 113 312 109 122 670 - - - - - - 670
Vermont 6 55 54 16 13 145 - - - - - - 145
Virginia 10 270 749 227 98 1,354 - - - - - - 1,354
Washington 39 448 1,233 420 491 2,631 - - - - - - 2,631
West Virginia 15 149 339 81 112 697 - - - - - - 697
Wisconsin (5) 1 - 20 9 25 56 - - - - - - 56
Wyoming 11 37 32 10 22 111 - - - - - - 111
U.S. Total 3,833 16,902 35,367 12,439 13,537 82,079 1,684 1,003 2,161 583 148 5,579 87,657
Puerto Rico - 1 56 100 404 560 - - - - - - 560
Grand Total 3,833 16,902 35,423 12,539 13,941 82,639 1,684 1,003 2,161 583 148 5,579 88,217

 

September 30, 2020

Table HM-63 (Sheet 3 of 3)
STATE URBAN MAJOR AND MINOR COLLECTOR
INTERNATIONAL ROUGHNESS INDEX (2) PRESENT SERVICEABILITY RATING (3) TOTAL REPORTED
<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 118 818 1,616 492 552 3,595 - - - - - - 3,595
Alaska 27 95 108 38 40 308 - - - - - - 308
Arizona 25 304 2,517 883 690 4,419 - - - - - - 4,419
Arkansas 1 13 10 1 - 24 162 372 1,180 461 59 2,234 2,259
California 26 401 2,645 1,933 3,811 8,816 - - - - - - 8,816
Colorado 41 197 742 396 494 1,870 - - - - 2 2 1,872
Connecticut 1 108 944 444 638 2,134 - - - - - - 2,135
Delaware 13 118 194 76 70 471 - - - - - - 471
District of Columbia - - 3 12 135 151 - - - - - - 151
Florida 185 1,593 3,808 1,099 1,037 7,722 105 171 215 51 67 608 8,330
Georgia 298 1,259 2,175 411 298 4,441 - - - - - - 4,441
Hawaii 1 13 154 119 165 452 - - - - - - 452
Idaho - 1 2 - - 3 219 96 326 73 30 745 748
Illinois 67 626 2,254 1,092 1,525 5,563 - - - - - - 5,563
Indiana 108 548 1,776 858 790 4,080 - - - - - - 4,080
Iowa - - - 2 - 2 - - - - - - 2
Kansas 38 144 672 346 673 1,873 - - - - - - 1,873
Kentucky 11 109 548 226 235 1,128 - - - - - - 1,128
Louisiana 50 288 814 446 739 2,336 50 - 87 - 134 272 2,608
Maine 23 109 261 88 97 578 - - - - - - 578
Maryland 28 276 922 465 697 2,389 - - - - - - 2,389
Massachusetts - - 193 3 - 197 - - - - - - 197
Michigan 55 470 1,307 660 1,019 3,510 35 10 9 43 68 164 3,674
Minnesota 102 315 1,289 562 554 2,821 - - - - - - 2,821
Mississippi 3 103 574 323 588 1,591 - - - - - - 1,591
Missouri - 129 893 551 1,008 2,582 - 9 19 - - 28 2,610
Montana 7 34 113 96 199 449 - - - - - - 449
Nebraska - - 3 1 1 6 - - - - - - 6
Nevada 33 171 506 233 245 1,188 - - - - - - 1,188
New Hampshire 11 91 216 79 144 540 - - 1 - - 1 541
New Jersey 4 25 391 520 943 1,883 347 164 691 203 36 1,442 3,325
New Mexico 34 140 430 188 363 1,155 - - 1 - - 1 1,156
New York 50 655 2,279 1,162 1,525 5,671 - - - - - - 5,671
North Carolina 3 479 2,107 602 479 3,670 - - - - - - 3,670
North Dakota 2 14 76 60 152 304 - - - - - - 304
Ohio 225 1,236 2,326 804 1,313 5,904 33 1 14 7 25 80 5,985
Oklahoma 2 19 37 1 - 60 - - - - - - 60
Oregon 2 30 33 7 8 81 1,110 616 649 135 34 2,544 2,625
Pennsylvania 32 336 2,271 1,314 1,636 5,589 - - - - - - 5,589
Rhode Island - 12 189 135 235 571 - - - - - - 571
South Carolina 48 383 1,176 535 544 2,686 - - - - - - 2,686
South Dakota - 8 101 120 88 316 - - 4 - - 4 321
Tennessee 1 1 2 - 2 6 - - - - - - 6
Texas 495 2,213 5,973 3,056 4,807 16,544 - - - - - - 16,544
Utah 10 108 513 404 552 1,587 - - 8 - - 8 1,595
Vermont 4 60 102 36 56 258 - - - - - - 258
Virginia 2 164 855 404 260 1,684 - - - - - - 1,684
Washington 12 198 1,086 632 931 2,859 - - - - - - 2,859
West Virginia 3 73 326 161 339 903 - - - - - - 903
Wisconsin (5) - - - 7 16 23 - - - - - - 23
Wyoming 11 105 50 5 7 178 - - - - - - 178
U.S. Total 2,214 14,592 47,580 22,088 30,702 117,176 2,062 1,439 3,205 973 455 8,134 125,310
Puerto Rico - - 37 86 386 509 - - - - - - 509
Grand Total 2,214 14,592 47,616 22,174 31,088 117,684 2,062 1,439 3,205 973 455 8,134 125,819

(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) Includes unpaved miles or bridges.

(5) Substantial amount of missing IRI data; caution is advised when used in analysis.

 

Page last modified on November 24, 2020
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