Skip to contentUnited States Department of Transportation - Federal Highway AdministrationSearch FHWAFeedback
Policy Information

Highway Statistics 2007

Functional System Length - 2007 1/ Miles by Measured Pavement Roughness / Present Serviceability Rating

OCTOBER 2008
Table HM-63
SHEET 1 OF 3

Excel Version (72 kb)
PDF Version (34 kb)

STATE RURAL MAJOR COLLECTOR
INTERNATIONAL ROUGHNESS INDEX 2/ TOTAL PRESENT SERVICEABILITY RATING 3/ TOTAL
<60 60-94 95-170 171-220 >220 >3.9 3.5-3.9 2.6-3.4 2.1-2.5 <=2.0 TOTAL
Alabama 16 3,483 6,865 714 375 11,453 - 101 152 22 - 275 11,728
Alaska 66 160 526 35 51 838 - - - - - - 838
Arizona 684 444 1,392 260 46 2,826 806 169 191 91 65 1,322 4,148
Arkansas - 1,226 5,435 2,594 209 9,464 - 657 857 661 721 2,896 12,360
California 131 2,301 5,341 2,098 1,213 11,084 823 101 244 - - 1,168 12,252
Colorado - 1,270 1,055 241 16 2,582 327 688 666 243 86 2,010 4,592
Connecticut - 43 567 171 94 875 60 6 9 - - 75 950
Delaware 11 247 145 29 25 457 - - - - - - 457
Dist. of Columbia - - - - - - - - - - - - -
Florida 249 396 - - - 645 367 1,137 1,861 11 91 3,467 4,112
Georgia 1,761 120 7 - - 1,888 2,668 2,115 4,011 1,416 354 10,564 12,452
Hawaii - - 170 80 61 311 - - - - - - 311
Idaho 29 594 898 18 1 1,540 103 36 75 2,109 238 2,561 4,101
Illinois 40 - - - - 40 3,861 2,420 4,158 2,272 698 13,409 13,449
Indiana 4/ 1,828 3,840 3,071 146 - 8,885 217 218 605 253 572 1,865 10,750
Iowa 653 1,369 4,066 971 319 7,378 283 2,761 2,370 183 - 5,597 12,975
Kansas 251 2,113 2,092 - - 4,456 111 2,137 9 5,304 538 8,099 12,555
Kentucky - 1,530 4,499 99 41 6,169 - - - - - - 6,169
Louisiana 136 1,591 2,006 750 190 4,673 - - - - - - 4,673
Maine 11 1,140 1,228 465 375 3,219 - - - - - - 3,219
Maryland 31 470 703 191 139 1,534 - - - - - - 1,534
Massachusetts 693 112 194 138 2 1,139 - - - - - - 1,139
Michigan - - - - - - 4,696 1,285 5,125 1,259 1,874 14,239 14,239
Minnesota 5/ 2,072 4,782 7,023 2,006 333 16,216 - - - - - - 16,216
Mississippi 51 1,080 8,624 1,417 353 11,525 - - - - - - 11,525
Missouri - 1,307 11,450 3,695 - 16,452 - - - - - - 16,452
Montana 129 2,138 2,100 199 17 4,583 5 - 132 165 117 419 5,002
Nebraska 922 1,056 793 309 6 3,086 1,316 793 1,087 217 348 3,761 6,847
Nevada 467 456 997 66 15 2,001 - - - - - - 2,001
New Hampshire 71 240 505 131 149 1,096 - - - - - - 1,096
New Jersey - 16 573 110 4 703 65 4 194 - - 263 966
New Mexico 150 373 1,418 1,157 423 3,521 - - - - - - 3,521
New York 305 1,556 3,042 261 505 5,669 - - - - - - 5,669
North Carolina 107 2,740 3,905 69 103 6,924 466 216 350 27 10 1,069 7,993
North Dakota 253 1,048 1,348 179 - 2,828 1,214 1,290 1,100 651 87 4,342 7,170
Ohio 483 3,508 2,691 222 43 6,947 2,113 1,029 1,242 - - 4,384 11,331
Oklahoma 18 2,258 7,474 2,483 4,384 16,617 207 - - - - 207 16,824
Oregon 89 660 528 146 - 1,423 1,262 2,041 1,870 393 - 5,566 6,989
Pennsylvania 63 1,429 3,750 1,077 904 7,223 - - - - - - 7,223
Rhode Island - 3 72 20 3 98 6 13 7 18 3 47 145
South Carolina 162 1,997 7,132 559 634 10,484 - - - - - - 10,484
South Dakota 217 370 1,410 264 234 2,495 1,903 386 2,543 131 513 5,476 7,971
Tennessee 688 2,217 1,925 2 177 5,009 72 - 28 - - 100 5,109
Texas 915 6,194 25,868 2,473 335 35,785 - 13 14 - 28 55 35,840
Utah 15 246 1,433 233 22 1,949 - 737 42 15 22 816 2,765
Vermont - 439 945 465 159 2,008 - - - - - - 2,008
Virginia - 320 3,217 6 - 3,543 1,845 1,544 1,679 527 156 5,751 9,294
Washington 51 1,045 1,710 407 1 3,214 1,317 1,353 1,624 163 290 4,747 7,961
West Virginia 96 465 2,868 1,001 1,208 5,638 - - - - - - 5,638
Wisconsin 254 2,371 7,030 1,448 1,476 12,579 - - - - - - 12,579
Wyoming 52 906 1,355 280 - 2,593 - 78 97 31 30 236 2,829
U.S. Total 14,220 63,669 151,446 29,685 14,645 273,665 26,113 23,328 32,342 16,162 6,841 104,786 378,451
Puerto Rico - - 36 40 88 164 6 17 47 - 10 80 244
Grand Total 14,220 63,669 151,482 29,725 14,733 273,829 26,119 23,345 32,389 16,162 6,851 104,866 378,695

OCTOBER 2008
Table HM-63
SHEET 2 OF 3

STATE URBAN MINOR ARTERIAL
INTERNATIONAL ROUGHNESS INDEX 2/ TOTAL PRESENT SERVICEABILITY RATING 2/ TOTAL
<60 60-94 95-170 171-220 >220 >3.9 3.5-3.9 2.6-3.4 2.1-2.5 <=2.0 TOTAL
Alabama 93 652 973 258 95 2,071 2 43 68 12 - 125 2,196
Alaska 6 40 124 20 17 207 - - - - - - 207
Arizona 10 78 195 93 23 399 761 271 283 32 - 1,347 1,746
Arkansas - 44 304 51 35 434 57 86 285 203 32 663 1,097
California 48 268 3,074 3,016 2,161 8,567 152 306 852 301 400 2,011 10,578
Colorado - 12 108 25 12 157 436 317 536 147 33 1,469 1,626
Connecticut - 42 659 149 71 921 571 103 62 5 - 741 1,662
Delaware 4 48 98 18 20 188 - - 1 - - 1 189
Dist. of Columbia - - 3 32 129 164 - - - - - - 164
Florida 67 636 731 45 50 1,529 668 942 745 39 97 2,491 4,020
Georgia 2,431 699 283 5 4 3,422 233 182 364 18 10 807 4,229
Hawaii - 4 40 24 50 118 - - - - - - 118
Idaho - 8 32 12 3 55 44 32 107 368 42 593 648
Illinois 250 19 - 22 5 296 1,265 940 1,333 412 84 4,034 4,330
Indiana 4/ 33 371 323 108 117 952 269 528 372 220 93 1,482 2,434
Iowa 42 98 407 340 435 1,322 3 105 118 - - 226 1,548
Kansas - 64 266 117 93 540 54 165 21 367 251 858 1,398
Kentucky 4 185 734 72 21 1,016 - - - - - - 1,016
Louisiana 25 361 765 351 363 1,865 - - 11 - - 11 1,876
Maine 7 59 105 30 31 232 - - - - - - 232
Maryland 2 90 591 236 447 1,366 - - - - - - 1,366
Massachusetts 2,388 95 831 333 111 3,758 - - - - - - 3,758
Michigan 3 9 18 3 8 41 1,281 410 1,517 303 1,038 4,549 4,590
Minnesota 5/ 48 413 1,055 416 351 2,283 - - - - - - 2,283
Mississippi - 62 537 175 107 881 - - - - - - 881
Missouri - 155 468 133 58 814 - - 26 - 1,085 1,111 1,925
Montana 1 31 54 17 26 129 - - 2 - - 2 131
Nebraska 11 4 41 17 16 89 164 113 255 68 19 619 708
Nevada 88 145 229 84 71 617 - - - - - - 617
New Hampshire 16 114 216 72 65 483 - - 5 7 - 12 495
New Jersey - 17 901 874 1,076 2,868 59 44 414 20 78 615 3,483
New Mexico 47 52 204 82 66 451 - - - 154 - 154 605
New York 144 867 2,665 892 939 5,507 - - - - - - 5,507
North Carolina 9 481 1,292 317 168 2,267 403 117 203 108 65 896 3,163
North Dakota - 6 9 4 1 20 64 23 110 39 9 245 265
Ohio 43 346 1,002 136 133 1,660 1,279 543 368 50 - 2,240 3,900
Oklahoma 45 211 760 340 656 2,012 29 - - - - 29 2,041
Oregon 2 18 50 17 10 97 562 226 212 20 2 1,022 1,119
Pennsylvania 16 353 2,291 723 574 3,957 - - - - - - 3,957
Rhode Island - 5 110 46 35 196 38 33 72 11 11 165 361
South Carolina 22 209 810 241 172 1,454 - - - - - - 1,454
South Dakota - 7 31 10 18 66 93 12 147 13 38 303 369
Tennessee 57 307 499 108 134 1,105 547 223 396 124 58 1,348 2,453
Texas 47 458 1,631 315 133 2,584 401 889 1,883 786 428 4,387 6,971
Utah 45 158 264 11 - 478 18 310 - - 7 335 813
Vermont - 12 68 14 10 104 6 10 9 5 16 46 150
Virginia 23 166 600 110 115 1,014 248 346 528 65 13 1,200 2,214
Washington 45 73 159 9 39 325 819 383 699 256 89 2,246 2,571
West Virginia 6 96 426 98 96 722 - - - - - - 722
Wisconsin 71 604 1,252 305 201 2,433 - - - - - - 2,433
Wyoming - 4 31 7 9 51 28 29 51 4 4 116 167
U.S. Total 6,199 9,256 28,319 10,933 9,580 64,287 10,554 7,731 12,055 4,157 4,002 38,499 102,786
Puerto Rico 1 1 147 258 277 684 83 109 109 18 6 325 1,009
Grand Total 6,200 9,257 28,466 11,191 9,857 64,971 10,637 7,840 12,164 4,175 4,008 38,824 103,795

OCTOBER 2008
Table HM-63
SHEET 3 OF 3

STATE URBAN COLLECTOR
INTERNATIONAL ROUGHNESS INDEX 2/ TOTAL PRESENT SERVICEABILITY RATING 2/ TOTAL
<60 60-94 95-170 171-220 >220 >3.9 3.5-3.9 2.6-3.4 2.1-2.5 <=2.0 TOTAL
Alabama 1 172 1,196 356 243 1,968 32 36 76 36 - 180 2,148
Alaska 4 17 125 62 104 312 8 - - - - 8 320
Arizona - 32 118 152 49 351 479 227 257 108 138 1,209 1,560
Arkansas - 3 17 4 6 30 31 173 313 291 129 937 967
California 28 214 2,033 2,783 3,743 8,801 228 358 813 449 421 2,269 11,070
Colorado - 6 23 3 - 32 469 214 671 260 115 1,729 1,761
Connecticut - 14 167 140 17 338 1,168 181 158 5 1 1,513 1,851
Delaware 1 78 153 79 36 347 5 6 8 - 2 21 368
Dist. of Columbia - - 1 8 146 155 - - - - - - 155
Florida - 70 91 - - 161 1,641 1,836 2,705 300 176 6,658 6,819
Georgia 1,599 11 7 - - 1,617 257 126 557 26 75 1,041 2,658
Hawaii - 6 84 100 197 387 - - 1 4 - 5 392
Idaho - - - 3 - 3 47 38 89 367 50 591 594
Illinois 40 1 - - - 41 1,315 808 1,361 568 350 4,402 4,443
Indiana 4/ 143 111 234 35 43 566 336 408 397 320 177 1,638 2,204
Iowa 7 70 311 173 275 836 7 61 104 - - 172 1,008
Kansas - - 149 167 244 560 2 119 26 283 375 805 1,365
Kentucky - 23 843 71 23 960 - - - - - - 960
Louisiana 14 275 841 374 673 2,177 - 1 - 12 5 18 2,195
Maine 4 110 193 118 110 535 - - - - - - 535
Maryland - 8 586 343 703 1,640 - - - - - - 1,640
Massachusetts 2,682 - 229 - - 2,911 - - - - - - 2,911
Michigan - - 1 1 1 3 788 197 1,011 146 986 3,128 3,131
Minnesota 5/ - 57 444 492 1,011 2,004 - - - - - - 2,004
Mississippi 4 16 923 212 250 1,405 - - - - - - 1,405
Missouri - 73 300 35 21 429 - - 40 - 1,824 1,864 2,293
Montana - - - 1 - 1 - 11 118 104 79 312 313
Nebraska - - 2 3 - 5 72 55 194 80 53 454 459
Nevada - 66 209 111 222 608 - - - - - - 608
New Hampshire 13 83 246 50 86 478 - - 9 18 1 28 506
New Jersey - 8 386 598 1,223 2,215 78 122 223 115 7 545 2,760
New Mexico - 52 218 167 290 727 - - - 751 - 751 1,478
New York 12 209 2,138 711 1,488 4,558 - - - - - - 4,558
North Carolina 3 453 793 230 160 1,639 286 232 399 153 170 1,240 2,879
North Dakota - - 4 2 - 6 54 29 125 32 20 260 266
Ohio 19 121 507 101 27 775 2,072 1,080 591 103 8 3,854 4,629
Oklahoma - 14 233 223 521 991 32 - - - - 32 1,023
Oregon - 3 1 13 1 18 687 503 506 86 80 1,862 1,880
Pennsylvania - 142 2,458 1,364 1,365 5,329 - - - - - - 5,329
Rhode Island - - 10 7 10 27 96 157 192 94 50 589 616
South Carolina - 144 1,076 625 555 2,400 - - - - - - 2,400
South Dakota - - 7 8 24 39 73 13 95 7 18 206 245
Tennessee - 8 42 16 41 107 778 340 680 201 73 2,072 2,179
Texas 39 353 1,898 414 223 2,927 612 1,201 2,604 1,351 692 6,460 9,387
Utah 18 - 84 1 - 103 7 622 9 - 55 693 796
Vermont - 2 3 - 1 6 11 60 45 30 62 208 214
Virginia 1 20 156 15 22 214 492 547 849 151 80 2,119 2,333
Washington - 12 3 - 7 22 708 336 676 420 175 2,315 2,337
West Virginia 7 10 233 185 281 716 - - - - - - 716
Wisconsin 19 379 1,114 381 282 2,175 - - - - - - 2,175
Wyoming - 4 4 10 - 18 58 109 226 46 36 475 493
U.S. Total 4,658 3,450 20,894 10,947 14,724 54,673 12,929 10,206 16,128 6,917 6,483 52,663 107,336
Puerto Rico - - 31 87 115 233 194 270 440 74 23 1,001 1,234
Grand Total 4,658 3,450 20,925 11,034 14,839 54,906 13,123 10,476 16,568 6,991 6,506 53,664 108,570

1/ Some States elect to report International Roughness Index (IRI) for these systems; some report IRI for some sections and PSR for some sections. Some differences from other tables maybe noted because these are estimated from sample data.

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/ Excludes 788 miles of Federal agency owned roads.

5/ Excludes 437 miles of local government owned roads.

Excel files can be viewed with the Excel Viewer
PDF files can be viewed with the Acrobat® Reader®
Updated: 01/03/2012

FHWA
United States Department of Transportation - Federal Highway Administration