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Table HM-47 – Office of Highway Policy Information (OHPI) – FHWA

Highway Statistics Series

Highway Statistics 2012


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NATIONAL HIGHWAY SYSTEM LENGTH - 2012
  MILES BY MEASURED PAVEMENT ROUGHNESS - RURAL

October 2013
Table HM-47
Sheet 1 of 4

STATE INTERNATIONAL ROUGHNESS INDEX (IRI) (1)
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 5 343 174 40 23 13 5 3 4 605 19 1,011 858 144 65 33 14 7 8 2,139
Alaska 0 148 365 189 136 85 42 29 31 1,024 270 56 185 105 93 75 54 44 123 735
Arizona - 543 307 72 33 13 6 4 3 982 125 530 416 119 71 37 13 8 12 1,206
Arkansas 6 182 147 44 23 13 8 7 5 429 20 366 957 421 244 130 57 30 22 2,226
California 57 204 513 219 151 61 31 15 28 1,222 306 388 1,495 635 370 197 101 47 34 3,268
Colorado - 102 289 184 37 42 21 9 1 684 - 355 1,032 547 252 105 43 22 13 2,368
Connecticut - 14 18 6 2 2 0 0 0 43 - 12 57 44 25 13 6 3 4 166
Delaware - - - - - - - - - - - 23 103 27 12 1 1 1 2 170
Dist. of Columbia - - - - - - - - - - - - - - - - - - - -
Florida 1 484 240 16 5 2 0 0 - 747 122 1,159 1,320 198 69 31 11 7 7 2,801
Georgia 22 323 275 54 29 14 - - - 695 129 1,360 1,867 162 42 8 2 0 0 3,441
Hawaii - 0 2 2 1 1 0 0 0 6 0 4 23 21 19 15 9 7 15 112
Idaho - 125 235 81 40 18 8 6 9 522 6 104 694 434 248 125 54 35 42 1,735
Illinois - 597 571 96 7 84 - - - 1,356 - 390 1,105 417 243 155 47 10 7 2,373
Indiana 157 315 150 52 30 23 13 8 10 599 42 612 603 195 78 44 21 17 21 1,592
Iowa 0 240 264 102 19 3 1 0 - 629 32 508 1,019 747 456 369 190 113 50 3,453
Kansas - 133 360 125 33 5 - - - 656 19 561 1,893 489 101 19 6 3 1 3,073
Kentucky 29 374 158 24 8 2 1 0 0 568 374 687 555 148 64 32 15 6 5 1,512
Louisiana 5 161 155 88 61 42 14 5 3 528 32 151 464 163 105 73 49 34 44 1,082
Maine 0 115 98 80 6 - 0 0 - 299 0 40 308 295 85 33 14 17 3 794
Maryland 1 79 84 11 4 2 1 1 1 182 3 202 181 43 22 10 6 4 4 471
Massachusetts - 20 35 5 1 1 0 0 1 64 - 16 36 24 19 12 5 3 5 120
Michigan - 216 236 68 37 24 12 6 4 603 0 1,291 866 215 104 52 26 14 14 2,582
Minnesota - 177 269 89 52 25 9 5 3 629 24 918 1,247 559 340 226 131 73 88 3,582
Mississippi - 168 242 55 10 20 8 - - 502 - 386 1,063 281 144 73 33 19 4 2,004
Missouri - 546 254 39 15 6 3 2 1 867 41 1,050 1,289 332 139 72 34 17 14 2,947
Montana - 416 565 77 34 20 7 4 6 1,129 - 634 1,334 348 146 78 32 19 33 2,623
Nebraska - 240 124 36 17 - - - - 418 - 923 1,046 383 241 82 42 25 25 2,767
Nevada 5 278 129 10 8 9 4 1 1 440 0 841 632 57 10 3 1 0 0 1,543
New Hampshire - 111 20 12 5 2 4 - - 154 45 104 172 53 27 10 3 2 2 374
New Jersey - 24 15 2 2 0 0 0 0 45 0 23 52 39 36 20 10 6 7 193
New Mexico 2 475 315 33 15 7 0 0 - 846 3 648 776 189 105 41 10 6 1 1,776
New York 5 227 476 68 35 17 6 9 9 847 4 115 853 398 149 61 19 11 16 1,622
North Carolina 0 319 174 41 21 13 6 2 5 581 25 470 1,129 345 159 73 35 21 28 2,261
North Dakota - 197 289 27 6 - - - - 519 - 664 1,627 401 132 60 20 8 23 2,935
Ohio 0 238 396 66 12 9 1 0 0 723 7 413 980 408 118 58 25 10 6 2,018
Oklahoma - 266 311 83 13 9 1 1 - 684 - 311 1,017 488 316 90 56 41 19 2,338
Oregon 3 196 223 90 25 10 4 2 1 550 13 561 1,395 436 202 99 45 22 26 2,787
Pennsylvania 1 401 508 142 52 9 2 1 1 1,117 4 339 868 397 181 82 35 13 13 1,929
Rhode Island - 21 - - - - - - - 21 - - 7 11 9 5 7 4 4 48
South Carolina - 199 299 65 15 2 1 0 - 581 - 133 877 412 161 49 12 1 4 1,648
South Dakota - 155 350 91 1 1 0 0 - 599 2 424 1,630 503 163 96 34 33 26 2,910
Tennessee - 599 63 13 7 3 2 0 0 687 16 888 718 166 73 27 13 6 6 1,898
Texas 16 638 1,068 224 67 23 13 4 5 2,041 207 1,213 3,529 1,898 781 268 82 20 12 7,802
Utah - 342 319 45 14 4 0 - - 724 3 150 493 238 103 54 16 5 0 1,059
Vermont - 201 67 8 3 1 0 0 - 280 - 76 155 43 20 11 7 4 7 324
Virginia 0 165 422 54 13 4 0 - - 658 2 144 1,127 417 97 29 17 5 1 1,836
Washington - 170 164 53 30 19 13 8 11 467 - 333 986 386 175 72 37 25 25 2,040
West Virginia 3 61 237 22 26 9 7 - 2 365 24 31 470 295 138 66 21 14 10 1,044
Wisconsin 0 105 211 74 61 26 1 0 0 479 41 724 1,106 619 403 201 76 38 42 3,209
Wyoming - 258 418 90 37 5 - - - 809 55 219 1,064 467 102 57 3 10 3 1,926
U.S. Total 318 11,909 12,603 3,167 1,283 706 258 134 146 30,204 2,017 22,562 43,678 16,163 7,455 3,631 1,603 888 883 96,863
Puerto Rico (3) - - 1 10 4 11 5 4 7 42 - - 1 3 13 2 - - - 19
Grand Total 318 11,909 12,604 3,177 1,287 717 263 137 153 30,246 2,017 22,562 43,679 16,165 7,468 3,633 1,603 888 883 96,882

NATIONAL HIGHWAY SYSTEM LENGTH - 2012
  MILES BY MEASURED PAVEMENT ROUGHNESS - RURAL

October 2013
Table HM-47
Sheet 2 of 4

STATE INTERNATIONAL ROUGHNESS INDEX (IRI) (1)
TOTAL RURAL NHS
NOT REPORTED (2) < 60 60-94 95-119 120-144 145-170 171-194 195-220 > 220 TOTAL REPORTED
Alabama 25 1,354 1,031 184 88 46 19 11 12 2,744
Alaska 270 204 549 294 229 160 96 73 154 1,758
Arizona 125 1,073 724 191 103 51 18 12 15 2,188
Arkansas 26 548 1,104 465 267 143 65 37 27 2,655
California 363 592 2,008 854 521 258 132 62 62 4,490
Colorado - 458 1,320 730 289 147 64 31 14 3,052
Connecticut - 26 75 50 27 16 6 4 5 209
Delaware - 23 103 27 12 1 1 1 2 170
Dist. of Columbia - - - - - - - - - -
Florida 123 1,643 1,560 214 73 33 11 7 7 3,549
Georgia 151 1,683 2,141 216 71 22 2 0 0 4,136
Hawaii 0 4 25 22 20 16 9 7 16 119
Idaho 6 229 929 515 288 143 62 41 51 2,257
Illinois - 988 1,676 513 250 239 47 10 7 3,729
Indiana 199 927 753 247 108 67 34 25 30 2,191
Iowa 32 748 1,283 849 475 372 191 113 50 4,081
Kansas 19 694 2,252 614 135 24 6 3 1 3,729
Kentucky 402 1,062 713 172 72 35 16 7 5 2,080
Louisiana 37 311 619 251 166 115 63 39 46 1,610
Maine 1 155 406 374 91 33 15 17 3 1,093
Maryland 3 280 264 54 26 12 7 4 5 653
Massachusetts - 35 71 30 20 12 6 3 6 184
Michigan 0 1,507 1,102 283 141 77 39 20 17 3,185
Minnesota 24 1,095 1,516 648 392 250 141 78 91 4,211
Mississippi - 554 1,304 336 154 92 41 19 4 2,506
Missouri 41 1,595 1,543 371 154 78 37 19 15 3,814
Montana - 1,050 1,899 425 180 98 39 22 39 3,753
Nebraska - 1,163 1,170 419 259 82 42 25 25 3,184
Nevada 5 1,118 760 67 19 12 5 2 1 1,984
New Hampshire 45 216 192 65 32 12 7 2 2 528
New Jersey 0 47 67 41 38 20 11 7 7 238
New Mexico 5 1,123 1,090 223 120 48 11 6 1 2,621
New York 8 342 1,329 466 184 78 25 20 25 2,469
North Carolina 26 789 1,303 386 180 86 42 23 33 2,842
North Dakota - 861 1,916 429 138 60 20 8 23 3,455
Ohio 7 651 1,376 474 130 67 27 10 7 2,741
Oklahoma - 577 1,328 571 329 98 57 42 19 3,021
Oregon 16 757 1,618 526 227 108 49 24 28 3,337
Pennsylvania 6 741 1,376 539 234 91 37 14 14 3,046
Rhode Island - 21 7 11 9 5 7 4 4 69
South Carolina - 332 1,177 476 176 51 13 1 4 2,229
South Dakota 2 579 1,981 594 164 97 34 34 26 3,508
Tennessee 16 1,487 781 179 80 29 15 7 7 2,585
Texas 223 1,850 4,597 2,122 847 292 95 23 17 9,843
Utah 3 491 812 283 117 58 16 5 0 1,783
Vermont - 278 222 51 23 12 7 4 7 604
Virginia 2 309 1,548 470 110 34 17 5 1 2,494
Washington - 503 1,150 439 205 91 50 34 36 2,508
West Virginia 27 92 707 317 164 75 28 14 12 1,409
Wisconsin 41 828 1,317 693 465 228 77 38 42 3,688
Wyoming 55 477 1,483 558 139 63 3 10 3 2,736
U.S. Total 2,335 34,471 56,281 19,329 8,738 4,337 1,862 1,022 1,028 127,068
Puerto Rico (3) - - 3 13 17 13 5 4 7 61
Grand Total 2,335 34,471 56,283 19,342 8,755 4,350 1,867 1,026 1,035 127,128

NATIONAL HIGHWAY SYSTEM LENGTH - 2012
  MILES BY MEASURED PAVEMENT ROUGHNESS - URBAN

October 2013
Table HM-47
Sheet 3 of 4

STATE INTERNATIONAL ROUGHNESS INDEX (IRI) (1)
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 9 165 108 39 32 17 10 6 7 384 55 354 415 130 70 40 23 19 23 1,075
Alaska 0 16 26 6 4 2 1 0 1 57 6 5 42 28 22 16 9 7 12 141
Arizona - 102 64 12 5 2 1 - - 187 673 217 356 160 61 40 29 23 53 940
Arkansas 3 56 67 31 20 19 11 7 7 218 85 50 236 160 105 88 51 36 52 779
California 300 37 308 191 131 72 57 40 38 875 1,847 92 633 755 900 1,089 859 805 1,211 6,343
Colorado - 34 126 52 36 12 5 2 - 268 3 51 289 236 258 238 154 99 182 1,506
Connecticut - 73 136 43 24 14 6 3 5 303 - 46 139 146 146 128 94 75 156 930
Delaware - 2 18 11 3 3 1 1 1 41 - 14 78 39 22 19 9 11 22 213
Dist. of Columbia - - - 1 2 4 1 - 4 12 - - - 3 2 3 8 7 89 111
Florida 6 381 294 36 15 8 4 2 1 741 228 1,047 1,842 546 265 152 78 48 82 4,061
Georgia 13 255 209 39 15 1 0 - - 518 80 592 1,048 271 121 41 22 15 12 2,123
Hawaii 0 4 10 6 6 6 5 4 7 48 4 36 58 41 35 27 19 15 41 273
Idaho - 12 41 19 7 5 2 2 2 90 9 17 82 70 57 43 30 23 82 405
Illinois - 201 319 34 42 229 1 - - 826 - 214 687 681 494 528 225 197 302 3,327
Indiana 71 150 129 53 30 19 12 9 9 412 62 297 494 258 215 195 130 110 192 1,891
Iowa - 29 65 28 13 9 7 2 1 153 73 28 146 190 145 84 57 38 88 775
Kansas - 26 84 52 41 14 1 - - 218 6 45 260 129 140 127 102 63 30 896
Kentucky 22 90 75 10 4 2 1 0 0 182 86 99 160 90 59 39 24 13 36 521
Louisiana 2 73 87 55 46 44 27 16 12 360 179 52 236 154 142 125 96 84 159 1,050
Maine - 12 31 24 1 0 0 - - 68 0 3 35 50 26 22 7 12 10 165
Maryland 1 101 111 30 17 11 9 7 10 296 59 152 375 193 154 117 79 65 209 1,343
Massachusetts 1 263 162 30 16 11 8 8 13 509 31 118 324 335 322 310 206 170 450 2,234
Michigan - 152 263 99 53 32 22 11 8 641 2 229 598 399 356 275 191 189 359 2,597
Minnesota 2 64 110 46 24 16 10 6 7 283 11 125 295 136 93 61 42 30 50 832
Mississippi - 28 106 36 15 11 1 - - 198 - 67 358 175 133 111 69 52 101 1,066
Missouri 3 249 170 43 21 13 6 4 4 510 329 241 441 203 118 80 44 29 37 1,194
Montana - 29 25 5 2 1 1 0 0 63 - 7 42 31 25 19 14 13 34 185
Nebraska - 6 26 24 7 1 0 - - 64 9 15 62 37 50 87 77 67 73 467
Nevada 4 67 41 15 15 6 3 1 1 147 23 141 113 47 28 18 8 4 10 370
New Hampshire - 50 19 2 1 - - - - 71 6 55 91 37 16 21 11 8 16 257
New Jersey 3 119 130 52 25 17 15 10 16 383 70 148 418 330 306 258 199 158 455 2,273
New Mexico 1 83 49 9 7 3 1 0 - 151 35 45 130 110 106 60 50 28 28 557
New York 2 82 434 138 63 47 23 26 41 855 33 60 729 671 534 351 264 199 927 3,735
North Carolina 6 249 260 82 37 22 9 6 3 667 225 204 791 403 260 148 83 52 144 2,084
North Dakota - 16 35 1 - - - - - 52 - 5 32 44 32 28 20 10 14 186
Ohio - 198 405 136 48 32 18 10 4 850 52 142 748 554 421 331 226 162 372 2,957
Oklahoma - 54 109 43 19 6 6 4 8 249 5 54 260 213 150 130 109 95 175 1,186
Oregon 4 41 81 23 12 8 4 2 1 172 32 76 212 152 109 79 52 38 75 793
Pennsylvania 6 157 318 153 59 25 13 5 3 731 300 152 683 578 523 420 235 186 320 3,098
Rhode Island - 12 27 5 2 2 1 0 - 48 6 7 39 49 57 73 66 53 97 441
South Carolina - 98 114 28 20 8 1 1 0 270 - 90 348 292 199 99 35 19 22 1,104
South Dakota - 15 35 26 2 1 0 0 - 80 4 5 21 30 17 18 19 8 12 130
Tennessee 4 270 89 23 14 7 3 2 4 413 44 503 539 210 134 98 57 41 76 1,658
Texas 55 160 509 246 132 74 27 9 5 1,161 404 392 1,870 1,392 1,015 655 363 245 573 6,505
Utah 3 54 93 46 15 2 0 0 - 210 14 66 244 135 86 38 20 7 7 602
Vermont - 26 11 2 1 1 0 0 - 40 - 7 36 17 13 9 6 4 10 102
Virginia 0 52 228 97 56 17 5 4 2 461 75 39 419 332 172 163 79 63 56 1,324
Washington 0 73 118 42 26 14 10 7 7 297 - 98 336 269 280 198 156 129 329 1,795
West Virginia - 35 113 24 7 3 5 0 0 187 8 11 129 87 43 30 14 11 17 342
Wisconsin 8 55 75 62 35 20 5 2 2 256 125 116 316 373 338 440 221 146 210 2,160
Wyoming - 8 54 32 4 2 4 1 - 104 16 6 64 60 37 19 10 5 15 216
U.S. Total 526 4,583 6,515 2,343 1,229 895 361 222 235 16,383 5,317 6,635 18,298 12,034 9,416 7,788 5,052 3,985 8,108 71,317
Puerto Rico (3) 2 - 30 74 47 44 28 8 6 238 2 - 2 7 11 33 21 11 25 109
Grand Total 528 4,583 6,545 2,417 1,276 939 390 229 241 16,621 5,319 6,635 18,300 12,041 9,427 7,821 5,073 3,997 8,133 71,426

NATIONAL HIGHWAY SYSTEM LENGTH - 2012
  MILES BY MEASURED PAVEMENT ROUGHNESS - URBAN

October 2013
Table HM-47
Sheet 4 of 4

STATE INTERNATIONAL ROUGHNESS INDEX (IRI) (1)
TOTAL URBAN NHS
NOT REPORTED (2) < 60 60-94 95-119 120-144 145-170 171-194 195-220 > 220 TOTAL REPORTED
Alabama 64 520 524 169 102 57 33 25 30 1,459
Alaska 6 21 68 35 26 18 11 7 13 198
Arizona 673 319 421 173 66 42 30 23 53 1,127
Arkansas 88 106 303 191 125 107 62 44 58 997
California 2,147 129 941 946 1,031 1,161 916 845 1,249 7,218
Colorado 3 84 415 288 294 250 159 101 182 1,774
Connecticut - 119 274 189 170 142 100 79 161 1,233
Delaware - 16 96 50 24 22 10 12 22 254
Dist. of Columbia - - - 4 4 7 8 7 93 123
Florida 234 1,428 2,136 582 280 160 82 50 83 4,802
Georgia 93 846 1,257 310 136 42 22 15 12 2,641
Hawaii 4 40 68 48 41 33 23 19 49 321
Idaho 9 29 123 89 65 48 33 25 84 495
Illinois - 415 1,006 715 536 757 225 197 302 4,153
Indiana 133 448 623 311 245 214 142 119 202 2,302
Iowa 73 57 210 218 158 93 64 39 89 928
Kansas 6 71 344 181 181 141 104 63 30 1,114
Kentucky 107 189 235 100 63 41 25 14 37 704
Louisiana 181 125 323 209 188 169 123 100 171 1,410
Maine 0 14 66 75 27 22 7 12 10 234
Maryland 60 252 486 223 171 128 88 72 219 1,640
Massachusetts 32 381 486 365 338 320 213 177 462 2,744
Michigan 2 382 861 498 410 307 213 200 367 3,238
Minnesota 13 189 404 182 117 77 53 36 57 1,116
Mississippi - 95 464 212 148 122 70 52 101 1,264
Missouri 332 490 611 246 138 94 50 32 41 1,703
Montana - 36 68 36 27 20 15 13 34 248
Nebraska 9 21 88 61 58 88 77 67 73 532
Nevada 27 208 154 62 43 24 11 5 11 517
New Hampshire 6 105 110 39 17 21 11 8 16 328
New Jersey 73 267 548 382 331 274 215 168 471 2,656
New Mexico 36 127 179 119 113 63 51 29 28 708
New York 35 143 1,163 809 597 397 287 225 968 4,590
North Carolina 231 453 1,050 485 297 169 92 58 148 2,752
North Dakota - 21 66 45 32 28 20 10 14 238
Ohio 52 340 1,153 691 469 363 244 172 376 3,808
Oklahoma 5 107 369 256 169 136 115 99 184 1,435
Oregon 36 117 293 175 121 86 56 40 76 965
Pennsylvania 306 309 1,000 731 582 445 247 190 323 3,829
Rhode Island 6 19 66 55 59 75 67 53 97 489
South Carolina - 188 462 320 219 107 36 20 22 1,374
South Dakota 4 20 56 56 20 19 19 8 12 210
Tennessee 49 773 627 233 147 105 60 44 80 2,071
Texas 459 551 2,379 1,639 1,147 729 390 254 577 7,666
Utah 17 120 336 181 101 39 20 7 7 812
Vermont - 32 47 19 14 10 6 4 10 143
Virginia 75 91 647 429 228 180 84 68 58 1,785
Washington 0 171 455 310 306 212 166 136 336 2,092
West Virginia 8 46 241 110 50 33 19 12 17 528
Wisconsin 133 171 391 435 373 460 227 148 212 2,416
Wyoming 16 13 118 92 41 20 13 7 15 320
U.S. Total 5,843 11,219 24,813 14,376 10,645 8,684 5,414 4,207 8,344 87,700
Puerto Rico (3) 4 - 32 82 58 77 49 19 31 347
Grand Total 5,847 11,219 24,845 14,458 10,703 8,760 5,463 4,226 8,374 88,047

(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.

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

(3) 2009 data.

 

Page last modified on November 7, 2014.
Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000