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Highway Statistics Series

Highway Statistics 2011


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NATIONAL HIGHWAY SYSTEM LENGTH - 2011
  MILES BY MEASURED PAVEMENT ROUGHNESS - RURAL

January 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 0 328 130 28 23 10 6 5 6 536 4 1,029 768 136 59 26 11 5 5 2,039
Alaska - 102 303 209 168 109 58 33 21 1,004 283 30 139 113 110 97 67 43 109 709
Arizona 18 451 376 86 26 14 5 1 3 962 151 400 368 106 60 28 13 2 - 977
Arkansas 0 203 138 45 22 13 7 7 6 441 23 301 762 317 186 99 44 21 12 1,740
California 166 207 391 213 138 66 36 23 38 1,112 481 303 1,346 513 296 167 68 44 15 2,752
Colorado - 104 288 170 50 50 16 4 1 685 - 246 841 474 189 77 22 9 4 1,862
Connecticut - 0 30 11 - 1 - - - 43 - 7 56 48 24 16 1 4 1 158
Delaware - - - - - - - - - - 4 16 96 37 9 2 1 1 2 164
Dist. of Columbia - - - - - - - - - - - - - - - - - - - -
Florida 3 459 251 23 8 3 1 0 0 745 55 688 611 86 36 18 7 3 5 1,453
Georgia 3 300 291 76 36 7 2 - 1 713 228 1,110 1,735 167 44 7 1 1 0 3,066
Hawaii - 0 2 2 1 1 0 0 0 6 5 4 22 19 17 12 7 6 13 101
Idaho - 434 68 14 4 2 0 0 - 522 8 995 519 80 25 9 3 2 2 1,634
Illinois - 538 587 138 20 72 - - 0 1,356 5 203 767 356 155 93 35 25 20 1,654
Indiana 93 291 182 56 34 24 10 9 13 619 1 504 461 133 49 26 13 10 25 1,220
Iowa 21 166 309 102 27 2 - - - 608 136 287 644 448 265 168 58 17 7 1,893
Kansas - 310 243 71 20 11 - - - 656 37 780 1,391 268 73 25 7 2 - 2,546
Kentucky 71 302 162 32 13 7 4 3 2 525 101 669 621 178 74 31 15 7 7 1,601
Louisiana - 133 156 134 62 48 0 1 - 533 2 38 557 220 110 84 38 27 12 1,086
Maine - 143 105 32 16 3 - 0 - 299 0 43 379 210 78 59 17 7 1 794
Maryland 1 78 83 11 5 3 1 1 1 183 4 185 183 46 21 10 6 4 4 459
Massachusetts 1 29 44 9 4 2 1 1 1 90 23 18 39 40 28 11 4 1 2 143
Michigan - 212 250 66 35 25 11 6 4 609 0 1,064 676 197 97 52 21 13 21 2,141
Minnesota - 133 289 107 52 26 11 8 3 630 21 509 942 413 257 172 98 58 54 2,503
Mississippi - 176 226 62 15 13 10 - - 502 1 343 972 208 99 61 14 21 3 1,721
Missouri 0 370 305 31 8 4 3 1 1 724 3 925 1,081 244 102 42 19 7 5 2,426
Montana - 328 597 113 56 20 6 3 5 1,129 - 603 1,367 331 155 80 34 19 27 2,617
Nebraska - 190 185 30 13 - - - - 418 - 673 855 370 177 106 51 60 17 2,309
Nevada 415 0 26 8 - - - - - 34 999 152 275 4 1 - - - - 432
New Hampshire - 108 23 8 5 2 4 - - 149 - 76 206 60 35 16 6 8 0 407
New Jersey - 26 30 5 1 1 1 1 1 65 0 22 74 55 45 28 16 10 9 259
New Mexico - 437 348 36 15 11 0 1 - 848 - 670 757 147 106 27 11 2 1 1,720
New York - 226 475 71 35 17 6 9 9 847 2 105 787 369 137 53 14 10 15 1,489
North Carolina 19 275 176 36 18 9 4 2 2 522 39 367 994 296 132 61 26 15 17 1,908
North Dakota - 222 275 22 - - - - - 519 - 596 1,111 231 89 51 11 - 0 2,090
Ohio - 226 387 81 21 6 1 1 0 723 - 338 880 297 75 37 19 3 4 1,652
Oklahoma - 239 312 91 17 17 6 1 0 684 - 281 922 459 208 95 60 46 27 2,099
Oregon - 125 267 150 8 4 0 - - 553 0 367 1,485 411 223 106 13 8 6 2,619
Pennsylvania 3 412 492 137 53 9 1 1 2 1,106 13 328 836 332 157 65 20 10 7 1,755
Rhode Island - 13 9 - - - - - - 21 0 - - 4 10 9 3 8 14 47
South Carolina - 185 320 59 15 2 - - 0 581 - 114 640 229 106 20 1 2 2 1,113
South Dakota 68 87 354 73 9 11 - 0 0 535 121 364 1,180 295 162 42 18 4 0 2,065
Tennessee 1 591 70 14 6 3 2 0 0 686 15 723 589 134 57 25 11 6 3 1,548
Texas 10 612 1,071 269 59 19 6 2 2 2,039 76 968 2,738 1,511 653 206 66 16 10 6,169
Utah - 222 344 93 40 20 4 - 1 724 1 33 419 268 123 67 28 11 4 952
Vermont 1 174 86 11 4 2 1 0 0 279 0 46 162 49 25 15 8 6 10 320
Virginia - 142 424 58 29 4 0 - - 656 2 107 792 236 81 9 18 1 0 1,244
Washington - 142 182 67 29 15 13 11 8 467 - 271 1,057 426 130 61 41 27 11 2,024
West Virginia - 55 250 25 20 10 - 7 1 368 16 46 522 222 165 51 21 8 12 1,047
Wisconsin - 105 196 86 56 26 6 2 1 478 - 439 875 558 336 152 66 25 31 2,483
Wyoming 0 259 391 123 34 6 - - - 812 30 151 1,012 522 157 51 7 3 12 1,915
U.S. Total 895 10,871 12,498 3,399 1,328 728 244 143 137 29,347 2,889 18,536 36,510 12,874 6,008 2,825 1,157 647 570 79,126
Puerto Rico 3/ - - 1 10 4 11 5 4 7 42 - - 1 3 13 2 - - - 19
Grand Total 895 10,871 12,499 3,409 1,332 739 249 147 144 29,389 2,889 18,536 36,511 12,877 6,021 2,827 1,157 647 570 79,145

NATIONAL HIGHWAY SYSTEM LENGTH - 2011
  MILES BY MEASURED PAVEMENT ROUGHNESS - RURAL

January 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 5 1,357 899 164 82 36 17 10 11 2,576
Alaska 283 132 442 323 278 206 125 76 130 1,712
Arizona 170 850 744 191 86 42 19 3 3 1,939
Arkansas 23 504 899 362 208 112 50 27 18 2,181
California 647 510 1,737 726 433 232 105 68 53 3,864
Colorado - 350 1,129 644 240 127 38 13 5 2,547
Connecticut - 8 86 60 24 18 1 4 1 201
Delaware 4 16 96 37 9 2 1 1 2 164
Dist. of Columbia - - - - - - - - - -
Florida 58 1,147 861 109 44 21 8 3 6 2,199
Georgia 231 1,410 2,026 243 80 14 3 1 1 3,779
Hawaii 5 5 24 21 18 13 8 6 13 107
Idaho 8 1,429 587 94 29 11 3 2 2 2,156
Illinois 5 741 1,354 494 176 165 35 25 21 3,010
Indiana 94 795 643 189 82 49 23 19 38 1,839
Iowa 156 453 953 551 292 171 58 17 7 2,501
Kansas 37 1,090 1,634 340 93 36 7 2 - 3,202
Kentucky 173 972 783 209 88 39 19 9 9 2,127
Louisiana 2 171 713 354 172 131 38 28 12 1,619
Maine 0 186 484 242 93 62 17 7 1 1,093
Maryland 5 263 267 57 26 13 7 4 6 642
Massachusetts 24 46 82 50 32 13 5 2 3 234
Michigan 0 1,275 926 263 132 77 32 19 25 2,750
Minnesota 21 642 1,231 520 309 198 109 66 57 3,133
Mississippi 1 519 1,198 270 114 74 24 21 3 2,223
Missouri 3 1,296 1,386 276 110 46 22 8 6 3,150
Montana - 932 1,964 445 211 100 40 22 32 3,747
Nebraska - 863 1,040 400 190 106 51 60 17 2,726
Nevada 1,414 152 301 11 1 - - - - 466
New Hampshire - 184 228 69 39 18 10 8 0 556
New Jersey 0 48 104 60 46 29 17 11 10 324
New Mexico - 1,107 1,105 182 120 38 11 3 1 2,568
New York 2 330 1,262 440 172 70 20 19 24 2,336
North Carolina 58 642 1,170 332 151 70 30 16 20 2,430
North Dakota - 818 1,386 254 89 51 11 - 0 2,610
Ohio - 563 1,267 378 96 43 20 4 4 2,375
Oklahoma - 520 1,234 550 225 113 66 47 27 2,782
Oregon 0 492 1,751 561 231 109 13 8 6 3,172
Pennsylvania 16 740 1,328 469 210 74 21 11 9 2,861
Rhode Island 0 13 9 4 10 9 3 8 14 68
South Carolina - 299 960 288 120 21 1 2 2 1,694
South Dakota 189 451 1,533 368 171 54 18 5 0 2,599
Tennessee 16 1,313 659 148 63 28 13 7 3 2,234
Texas 86 1,580 3,809 1,780 712 225 72 18 13 8,208
Utah 1 255 762 361 163 86 32 11 5 1,676
Vermont 1 220 248 60 29 17 9 6 11 599
Virginia 2 248 1,217 294 110 13 18 1 0 1,901
Washington - 413 1,239 493 159 77 54 37 19 2,491
West Virginia 16 101 772 247 186 61 21 15 13 1,415
Wisconsin - 544 1,071 645 392 178 72 27 32 2,960
Wyoming 30 410 1,403 645 191 56 7 3 12 2,727
U.S. Total 3,784 29,406 49,008 16,272 7,337 3,553 1,401 790 707 108,473
Puerto Rico 3/ - - 3 13 17 13 5 4 7 61
Grand Total 3,784 29,406 49,010 16,285 7,353 3,566 1,406 793 714 108,534

NATIONAL HIGHWAY SYSTEM LENGTH - 2011
  MILES BY MEASURED PAVEMENT ROUGHNESS - URBAN

January 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 0 157 101 37 30 17 10 8 7 368 14 295 256 71 39 22 8 7 8 707
Alaska - 21 30 15 8 2 1 - 1 78 1 2 15 10 23 6 5 2 5 69
Arizona 72 51 48 10 3 1 1 1 1 116 289 21 47 18 18 28 32 14 16 195
Arkansas 0 52 64 32 23 18 11 8 6 214 29 27 97 52 29 25 18 13 12 272
California 197 57 311 197 131 102 74 50 50 970 185 72 419 296 198 127 79 46 48 1,285
Colorado - 40 121 52 36 11 7 1 - 268 - 35 206 131 167 83 57 29 44 753
Connecticut - 40 164 48 29 13 3 3 3 303 - 21 125 92 88 62 28 20 24 459
Delaware - 2 18 12 4 3 1 2 0 41 2 9 50 30 13 10 4 3 7 126
Dist. of Columbia 5 - - 1 1 1 1 2 2 8 1 - 0 2 2 3 6 5 49 67
Florida 29 321 294 54 25 12 6 3 3 718 53 392 603 140 67 39 19 13 27 1,301
Georgia 104 199 167 44 17 2 - - - 427 81 304 510 153 42 15 7 3 2 1,037
Hawaii 0 4 10 6 6 6 5 4 7 48 12 31 42 28 24 17 11 8 20 181
Idaho - 68 19 3 0 0 0 - - 90 13 35 25 12 8 4 1 1 1 88
Illinois - 136 289 101 47 236 7 - 9 826 100 56 393 308 306 252 158 105 216 1,794
Indiana 64 126 132 53 29 24 13 10 9 396 6 116 157 71 50 34 21 20 34 504
Iowa 5 13 73 27 19 12 3 3 - 149 43 9 68 102 84 24 29 19 21 356
Kansas - 49 72 52 35 9 1 - - 218 5 35 196 43 21 10 8 2 4 320
Kentucky 32 70 68 17 6 5 2 1 2 172 50 77 118 50 29 19 10 6 13 323
Louisiana - 34 88 107 46 59 22 8 2 365 48 18 147 120 85 74 71 47 58 620
Maine - 18 33 17 1 - 0 0 - 69 - 5 31 24 31 18 8 9 8 133
Maryland 2 96 117 28 16 11 9 6 12 295 51 97 158 61 46 35 26 16 51 491
Massachusetts 15 205 172 35 16 11 9 7 13 467 234 91 189 127 130 117 87 70 179 990
Michigan - 142 263 100 55 33 21 12 10 635 1 151 332 227 154 111 83 121 192 1,371
Minnesota 3 32 118 49 36 27 14 3 3 281 21 54 212 100 82 39 19 15 10 532
Mississippi - 33 100 40 17 11 1 - - 201 0 59 184 83 37 22 18 11 11 424
Missouri 0 207 196 37 17 11 5 5 6 482 15 203 327 112 58 28 18 10 12 770
Montana - 21 34 2 4 1 0 0 0 63 - 6 21 17 8 4 5 2 8 70
Nebraska - 6 31 15 8 3 0 - - 64 8 12 40 13 20 70 38 34 42 269
Nevada 100 7 12 1 - 0 - - - 21 119 25 13 4 2 0 - 0 - 44
New Hampshire - 41 31 4 0 - - - - 76 1 40 68 22 12 5 5 3 3 159
New Jersey 9 106 113 49 30 18 13 11 18 357 9 83 326 258 189 148 101 80 194 1,380
New Mexico - 62 64 13 10 2 - 1 0 152 5 41 68 35 30 17 7 4 8 210
New York 2 80 436 142 59 49 22 26 41 855 26 50 488 398 310 188 140 89 299 1,963
North Carolina 18 241 243 69 33 16 8 2 2 614 33 175 422 156 85 43 20 11 20 932
North Dakota - 18 33 1 - - - - - 52 - 5 22 17 12 9 3 - 0 69
Ohio - 178 426 141 59 26 9 9 3 850 1 76 498 228 170 102 51 36 69 1,231
Oklahoma - 47 105 40 25 8 8 5 10 249 - 26 158 64 40 31 17 16 17 367
Oregon - 13 120 30 4 8 1 - 0 176 3 27 117 103 62 43 17 14 18 400
Pennsylvania 14 161 317 144 54 24 11 4 1 716 73 142 541 405 281 196 105 68 99 1,837
Rhode Island - 7 31 9 1 2 0 0 - 50 1 4 26 31 24 16 13 12 15 141
South Carolina - 94 113 30 21 7 4 1 1 270 - 62 227 184 109 48 16 9 9 664
South Dakota 7 - 42 13 5 6 1 1 - 69 6 1 15 17 14 10 5 3 1 66
Tennessee 1 273 91 24 11 6 3 2 6 416 18 271 243 92 56 38 21 13 22 757
Texas 20 154 484 261 144 76 29 13 6 1,167 167 218 1,095 869 647 435 235 217 245 3,961
Utah - 65 74 42 23 6 2 0 - 213 20 31 120 57 31 28 10 4 3 285
Vermont - 28 9 1 0 1 0 0 1 40 2 2 17 8 6 5 4 3 9 54
Virginia 2 43 219 118 42 27 3 6 2 460 49 29 371 228 150 109 57 38 34 1,016
Washington 0 49 149 44 21 14 11 4 4 297 2 64 202 108 66 40 35 22 81 619
West Virginia - 29 125 19 6 4 3 - 0 187 - 13 97 44 32 16 7 7 8 223
Wisconsin - 37 94 78 34 12 6 3 - 265 - 25 171 197 191 143 106 76 96 1,004
Wyoming 1 11 50 28 6 2 4 0 - 100 3 4 26 25 13 7 0 0 4 79
U.S. Total 703 3,947 6,514 2,490 1,253 951 365 227 239 15,986 1,801 3,651 10,302 6,046 4,389 2,974 1,850 1,378 2,376 32,966
Puerto Rico 3/ 2 - 30 74 47 44 28 8 6 238 2 - 2 7 11 33 21 11 25 109
Grand Total 705 3,947 6,544 2,564 1,301 995 394 234 245 16,224 1,803 3,651 10,304 6,053 4,400 3,007 1,871 1,389 2,401 33,075

NATIONAL HIGHWAY SYSTEM LENGTH - 2011
  MILES BY MEASURED PAVEMENT ROUGHNESS - URBAN

January 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 14 452 358 109 69 39 19 14 15 1,075
Alaska 1 24 44 25 32 9 6 2 6 148
Arizona 361 73 95 28 21 29 33 15 17 311
Arkansas 30 79 161 83 52 43 28 21 19 486
California 382 129 730 492 330 229 153 96 97 2,255
Colorado - 75 328 183 203 94 64 30 44 1,021
Connecticut - 61 289 140 117 75 31 23 27 762
Delaware 2 11 68 41 16 13 5 5 7 167
Dist. of Columbia 6 - 0 3 3 4 7 7 50 75
Florida 82 713 896 194 92 51 26 17 30 2,018
Georgia 185 503 677 197 59 17 7 3 2 1,464
Hawaii 13 35 52 35 30 23 16 12 27 229
Idaho 13 103 43 14 8 4 2 1 1 178
Illinois 100 192 683 409 353 488 165 105 225 2,620
Indiana 70 242 290 124 79 57 34 30 43 899
Iowa 48 22 141 129 104 35 32 21 21 505
Kansas 5 84 268 95 56 19 9 2 4 538
Kentucky 82 147 186 67 35 24 13 7 15 495
Louisiana 48 52 234 227 131 133 93 55 60 985
Maine - 23 64 41 31 18 9 9 8 202
Maryland 53 193 275 89 62 46 35 23 63 786
Massachusetts 249 296 361 162 146 128 95 77 192 1,457
Michigan 1 294 595 327 209 143 104 132 202 2,006
Minnesota 23 86 329 149 118 66 34 19 13 813
Mississippi 0 91 284 122 53 32 19 11 11 625
Missouri 15 410 523 149 75 39 23 15 18 1,253
Montana - 27 55 19 12 5 5 2 8 133
Nebraska 8 18 71 28 29 73 38 34 42 333
Nevada 219 33 26 5 2 1 - 0 - 65
New Hampshire 1 81 99 26 12 5 5 3 3 234
New Jersey 18 189 439 307 219 166 114 91 212 1,737
New Mexico 5 103 133 48 39 19 7 5 8 362
New York 28 130 924 541 369 237 162 115 340 2,818
North Carolina 51 416 666 225 118 58 28 14 21 1,546
North Dakota - 23 55 19 12 9 3 - 0 121
Ohio 1 254 924 369 229 128 60 45 73 2,081
Oklahoma - 73 263 104 66 39 24 21 27 617
Oregon 3 41 236 133 66 51 19 14 18 577
Pennsylvania 87 303 858 549 334 219 116 72 100 2,553
Rhode Island 1 11 58 40 25 17 13 12 15 191
South Carolina - 156 341 213 129 55 20 10 10 934
South Dakota 14 1 58 30 20 16 6 4 1 135
Tennessee 19 544 333 116 67 44 24 16 28 1,173
Texas 188 373 1,579 1,131 791 511 264 230 251 5,129
Utah 20 96 194 100 53 34 12 5 3 498
Vermont 2 30 27 9 6 5 4 3 9 94
Virginia 51 72 590 345 193 136 60 44 37 1,476
Washington 2 113 351 152 88 54 46 27 84 916
West Virginia - 43 222 63 37 20 10 7 8 410
Wisconsin - 62 266 276 225 155 111 79 96 1,269
Wyoming 4 15 76 53 19 8 4 0 4 180
U.S. Total 2,504 7,598 16,816 8,536 5,642 3,925 2,216 1,604 2,615 48,953
Puerto Rico 3/ 4 - 32 82 58 77 49 19 31 347
Grand Total 2,507 7,598 16,848 8,618 5,700 4,002 2,265 1,623 2,646 49,300

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.