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FHWA Home / Policy & Governmental Affairs / Highway Policy Information / Table HM-47 - Highway Statistics 2014

Highway Statistics 2014


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NATIONAL HIGHWAY SYSTEM LENGTH - 2014
  MILES BY MEASURED PAVEMENT ROUGHNESS - RURAL

October 2015
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 1 327 167 40 20 8 4 3 3 571 1 916 807 151 63 35 18 10 9 2,008
Alaska 12 169 329 178 130 86 48 24 27 991 272 80 165 90 83 72 64 51 115 721
Arizona 1 488 291 73 32 22 7 4 4 920 29 481 412 138 78 39 14 6 4 1,171
Arkansas 5 170 149 43 22 11 5 3 2 405 89 297 860 355 196 103 45 19 12 1,887
California 23 358 418 151 119 67 31 17 23 1,185 1,927 256 635 319 176 98 37 26 46 1,592
Colorado - 99 283 128 63 39 20 10 6 648 - 491 1,093 490 253 131 59 31 30 2,576
Connecticut - 9 13 5 0 1 0 0 0 29 - 13 60 38 20 9 3 3 4 150
Delaware - - - - - - - - - - - 39 90 20 3 2 1 0 0 154
Dist. of Columbia - - - - - - - - - - - - - - - - - - - -
Florida 75 395 217 18 9 2 1 0 0 643 72 1,000 1,290 254 70 29 7 4 3 2,658
Georgia 0 250 187 58 23 10 4 2 2 536 45 881 1,603 386 128 52 18 10 13 3,090
Hawaii - - - - - - - - - - 0 1 19 17 16 11 6 4 5 80
Idaho - 276 169 45 17 7 4 3 1 522 16 490 844 239 89 40 18 11 8 1,736
Illinois - 597 509 121 16 - - - - 1,243 - 406 1,114 390 250 111 29 10 8 2,317
Indiana 101 376 150 43 25 17 10 6 8 634 3 713 610 173 83 37 20 9 19 1,665
Iowa 3 285 204 64 28 12 6 3 7 609 155 807 985 467 309 215 135 95 163 3,176
Kansas - 435 163 30 13 4 2 0 0 647 17 1,737 982 192 67 36 14 7 5 3,039
Kentucky 7 443 103 22 8 4 1 1 0 582 27 793 679 160 59 26 9 5 6 1,737
Louisiana 1 224 123 82 59 30 9 4 2 532 33 210 429 157 95 65 35 22 23 1,036
Maine - 193 81 19 - 6 - 0 - 299 - 43 332 222 108 59 27 1 1 795
Maryland 1 54 70 11 3 1 1 0 1 141 15 157 135 25 15 8 4 3 3 348
Massachusetts 64 - - - - - - - - - 121 - - - - - - - - -
Michigan 0 210 223 62 30 20 13 4 5 566 4 1,195 865 216 98 52 25 13 20 2,486
Minnesota - 210 261 62 28 17 9 4 2 594 17 1,056 1,265 533 276 158 72 40 50 3,450
Mississippi - 279 133 29 14 8 4 4 2 473 - 604 763 242 139 72 31 15 16 1,881
Missouri 0 511 265 38 16 6 3 2 1 841 15 1,013 1,281 366 151 81 41 20 16 2,969
Montana - 401 571 77 27 12 4 1 2 1,094 - 715 1,327 389 166 80 37 24 35 2,773
Nebraska - 245 132 38 1 1 - - - 416 7 1,035 911 394 239 89 33 47 14 2,761
Nevada 0 205 70 33 35 33 25 19 29 448 5 399 703 282 77 20 14 16 24 1,536
New Hampshire - 117 18 4 1 1 1 0 0 142 1 138 137 41 25 16 11 8 11 388
New Jersey - 25 16 2 1 1 0 0 0 45 0 27 53 35 31 19 12 6 10 193
New Mexico 1 583 196 38 15 6 4 1 1 845 2 795 614 176 87 44 20 12 9 1,757
New York - 198 439 92 33 15 8 6 11 803 3 165 1,137 463 264 115 51 36 20 2,250
North Carolina 11 322 156 33 15 7 1 1 1 536 69 496 1,038 308 130 54 23 15 17 2,082
North Dakota - 220 235 42 11 2 1 0 0 511 0 1,005 1,240 380 147 76 38 23 41 2,950
Ohio 0 245 322 55 15 4 2 0 0 643 1 442 941 279 103 46 9 4 3 1,827
Oklahoma - 263 278 72 17 7 7 1 0 646 - 292 1,020 418 331 95 38 19 31 2,244
Oregon 2 225 192 54 14 4 3 1 1 493 14 500 1,343 439 192 91 41 20 17 2,644
Pennsylvania 1 465 472 108 41 16 7 8 3 1,119 26 407 862 303 164 86 44 27 29 1,924
Rhode Island - 15 2 0 0 0 - - 0 18 2 1 13 16 11 9 6 5 10 70
South Carolina - 214 265 52 12 3 0 - 0 546 - 108 832 382 186 58 9 15 3 1,592
South Dakota - 127 391 57 14 1 1 - 0 591 2 892 3,175 1,360 673 548 177 98 33 6,957
Tennessee 1 535 62 10 8 3 1 1 1 621 8 857 629 151 70 27 13 7 5 1,761
Texas - 713 957 206 72 31 10 6 5 2,001 9 1,712 3,394 1,487 663 288 112 51 53 7,760
Utah - 335 317 31 1 0 - 0 - 684 - 119 539 344 115 41 11 5 0 1,174
Vermont 2 186 58 7 5 1 - 0 - 257 1 71 144 45 21 11 5 5 6 308
Virginia 1 171 325 101 38 10 2 1 1 649 23 246 1,010 366 152 55 22 11 8 1,871
Washington - 173 144 47 23 16 9 6 6 425 - 342 916 352 154 75 37 26 23 1,926
West Virginia - 40 259 37 30 3 - - - 368 2 28 453 295 162 90 20 12 15 1,075
Wisconsin - 154 156 63 44 27 11 8 2 464 0 593 825 935 342 225 107 70 110 3,207
Wyoming 0 364 304 71 38 16 7 4 3 807 6 456 916 348 148 65 24 11 13 1,980
U.S. Total 312 12,895 10,843 2,653 1,184 601 284 160 163 28,783 3,037 25,518 41,490 15,626 7,479 3,867 1,649 985 1,117 97,731
Puerto Rico (3) - - 1 10 4 11 5 4 7 42 - - 1 3 13 2 - - - 19
Grand Total 312 12,895 10,844 2,663 1,188 611 289 164 170 28,825 3,037 25,518 41,491 15,629 7,492 3,869 1,649 985 1,117 97,750

NATIONAL HIGHWAY SYSTEM LENGTH - 2014
  MILES BY MEASURED PAVEMENT ROUGHNESS - RURAL

October 2015
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 1 1,243 974 191 82 43 21 13 12 2,579
Alaska 283 249 494 268 213 158 112 75 141 1,712
Arizona 29 969 703 211 110 61 21 10 8 2,092
Arkansas 93 467 1,009 398 218 115 50 22 14 2,292
California 1,950 614 1,053 470 296 164 68 43 68 2,777
Colorado - 589 1,375 619 316 170 79 41 36 3,225
Connecticut - 22 73 43 20 10 4 3 4 178
Delaware - 39 90 20 3 2 1 0 0 154
Dist. of Columbia - - - - - - - - - -
Florida 147 1,395 1,507 272 79 31 8 4 4 3,300
Georgia 45 1,131 1,791 443 150 63 22 12 14 3,626
Hawaii 0 1 19 17 16 11 6 4 5 80
Idaho 16 765 1,013 284 105 47 21 14 9 2,258
Illinois - 1,003 1,623 511 266 111 29 10 8 3,560
Indiana 104 1,089 759 216 108 54 30 16 28 2,299
Iowa 159 1,092 1,188 531 337 227 141 98 170 3,785
Kansas 17 2,171 1,145 222 80 40 16 7 5 3,686
Kentucky 34 1,236 782 182 67 30 11 6 6 2,319
Louisiana 34 434 552 238 154 96 44 25 25 1,568
Maine - 236 413 242 108 65 27 1 1 1,093
Maryland 16 210 204 36 18 9 5 3 4 490
Massachusetts 185 - - - - - - - - -
Michigan 4 1,406 1,088 278 128 73 38 17 25 3,052
Minnesota 17 1,267 1,525 595 304 176 81 43 52 4,044
Mississippi - 883 896 271 153 80 35 19 18 2,354
Missouri 15 1,524 1,546 404 166 87 44 22 16 3,810
Montana - 1,115 1,898 466 193 92 41 25 37 3,867
Nebraska 7 1,280 1,042 432 240 90 33 47 14 3,177
Nevada 5 603 773 315 112 53 39 35 53 1,983
New Hampshire 1 255 155 45 25 17 12 8 12 529
New Jersey 0 52 69 38 32 20 12 6 10 238
New Mexico 3 1,378 810 214 102 50 24 13 10 2,602
New York 3 363 1,576 555 297 130 59 42 31 3,053
North Carolina 80 818 1,194 341 145 61 25 16 17 2,618
North Dakota 0 1,225 1,475 422 158 78 38 23 41 3,461
Ohio 2 687 1,263 333 118 50 11 4 3 2,470
Oklahoma - 555 1,298 490 348 102 46 20 31 2,891
Oregon 16 725 1,535 493 206 95 44 21 17 3,137
Pennsylvania 28 872 1,335 411 205 103 51 34 32 3,043
Rhode Island 2 15 15 16 11 9 6 5 10 88
South Carolina - 322 1,097 434 198 60 9 15 3 2,138
South Dakota 2 1,019 3,566 1,418 688 549 178 98 33 7,548
Tennessee 8 1,391 691 161 78 30 15 9 6 2,381
Texas 9 2,426 4,351 1,693 735 320 122 57 58 9,761
Utah - 454 855 375 116 41 11 5 0 1,858
Vermont 2 257 202 52 26 12 5 5 6 564
Virginia 24 417 1,335 467 191 65 25 12 9 2,521
Washington - 515 1,061 399 177 91 47 32 30 2,351
West Virginia 2 68 712 332 192 93 20 12 15 1,443
Wisconsin 0 747 981 998 386 252 118 78 112 3,671
Wyoming 6 820 1,221 419 186 81 30 15 16 2,788
U.S. Total 3,349 38,414 52,333 18,279 8,663 4,467 1,933 1,145 1,280 126,514
Puerto Rico (3) - - 3 13 17 13 5 4 7 61
Grand Total 3,349 38,414 52,335 18,292 8,680 4,480 1,938 1,148 1,287 126,575

NATIONAL HIGHWAY SYSTEM LENGTH - 2014
  MILES BY MEASURED PAVEMENT ROUGHNESS - URBAN

October 2015
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 2 189 126 41 30 18 10 7 7 428 32 423 461 137 75 48 34 24 35 1,237
Alaska 2 19 37 10 5 3 1 1 1 77 3 9 45 28 19 16 11 7 19 154
Arizona 0 142 70 18 10 4 2 0 0 247 170 184 216 93 61 31 17 12 33 647
Arkansas 6 74 107 40 23 19 10 7 8 288 65 61 218 125 74 55 31 23 37 623
California 88 107 398 207 154 109 64 51 66 1,156 2,068 150 662 657 769 861 682 689 1,263 5,733
Colorado - 45 134 56 36 15 7 5 4 304 1 81 318 229 226 178 117 80 151 1,379
Connecticut - 104 123 43 23 12 6 3 4 317 0 63 205 169 152 121 75 56 106 946
Delaware - 3 19 9 4 2 2 1 1 41 0 14 106 45 21 13 9 7 14 227
Dist. of Columbia - - 0 0 5 3 1 2 1 12 0 - - 3 3 3 7 7 99 122
Florida 72 357 263 44 24 10 5 2 1 706 179 1,006 1,913 637 332 182 86 56 98 4,309
Georgia 0 332 229 72 36 19 11 6 4 711 234 558 1,092 374 202 118 69 48 109 2,569
Hawaii - 1 14 9 11 8 6 3 3 55 2 24 49 48 47 45 30 23 45 311
Idaho - 38 34 9 5 2 1 1 0 90 25 51 119 59 39 27 19 14 34 363
Illinois - 243 476 114 82 17 6 1 2 942 - 194 742 669 600 422 255 184 327 3,392
Indiana 74 155 114 51 32 19 12 10 6 399 19 334 528 277 212 168 113 83 192 1,907
Iowa 6 62 63 21 10 6 4 2 6 173 64 91 216 143 101 78 50 38 111 828
Kansas 2 98 59 32 20 10 4 2 1 226 56 140 161 50 65 41 32 33 19 540
Kentucky 8 119 62 12 5 2 1 1 0 203 40 186 233 97 61 39 25 16 30 686
Louisiana 1 101 87 51 46 41 23 12 11 371 140 102 242 162 148 132 92 84 182 1,143
Maine - 22 23 16 2 4 - - - 67 - 1 46 44 31 22 5 8 10 167
Maryland 3 116 135 31 16 13 7 6 10 336 80 236 437 198 148 111 75 56 161 1,421
Massachusetts 509 - - - - - - - - - 2,271 - - - - - - - - -
Michigan 0 167 259 106 57 37 27 17 15 685 1 238 612 429 350 278 208 175 443 2,733
Minnesota - 74 136 50 26 15 9 5 5 320 28 198 327 138 95 63 36 25 55 937
Mississippi - 107 66 21 13 9 5 3 2 226 0 148 321 160 114 82 52 42 123 1,043
Missouri 1 266 171 44 24 16 8 4 4 537 261 245 437 181 116 70 41 27 37 1,155
Montana - 46 38 6 3 2 1 0 1 98 6 24 64 38 27 17 11 7 22 211
Nebraska - 5 27 26 4 4 1 - - 66 4 18 62 39 53 82 92 57 68 471
Nevada 8 49 49 19 12 8 2 1 1 141 24 128 130 56 36 19 9 6 11 393
New Hampshire - 62 16 2 1 1 0 0 - 83 1 93 93 41 23 16 12 10 30 318
New Jersey 3 132 125 48 27 15 11 9 17 384 10 214 478 306 276 249 188 151 474 2,336
New Mexico - 102 29 8 7 4 1 1 1 153 5 90 159 91 76 64 41 32 60 614
New York 2 115 451 143 72 46 33 22 50 932 40 74 799 686 517 378 293 212 1,004 3,961
North Carolina 36 268 262 78 37 17 6 4 2 674 107 248 896 464 294 165 89 60 119 2,335
North Dakota - 22 32 4 1 0 - 0 0 60 - 19 47 34 27 15 15 9 20 186
Ohio - 267 441 143 51 16 8 2 2 931 7 250 877 553 440 313 223 158 386 3,200
Oklahoma - 48 135 54 21 15 4 6 4 286 48 53 254 191 146 130 100 87 155 1,117
Oregon 4 71 104 27 12 10 4 2 1 231 60 108 263 154 103 75 51 34 73 860
Pennsylvania 8 221 314 88 54 28 18 10 6 739 171 200 765 579 483 360 251 195 395 3,229
Rhode Island 0 24 19 5 2 1 0 0 0 52 59 15 49 45 47 49 38 32 86 361
South Carolina - 81 148 45 22 6 2 0 0 304 1 46 391 332 204 110 39 17 21 1,160
South Dakota 0 5 51 23 7 1 - - - 88 3 6 52 39 31 38 15 6 8 193
Tennessee 2 326 92 30 15 8 4 3 3 481 41 563 603 234 138 99 63 43 90 1,832
Texas 13 314 568 227 139 89 35 19 11 1,403 73 641 2,088 1,235 884 644 408 325 991 7,216
Utah - 78 113 42 16 4 0 0 - 253 - 78 276 154 93 53 18 5 5 682
Vermont 2 36 19 3 2 1 0 - - 60 7 12 34 20 15 9 6 4 9 110
Virginia 14 80 209 77 40 25 11 9 5 455 127 68 392 234 188 146 88 64 79 1,259
Washington - 121 124 41 23 11 7 5 5 338 0 154 390 267 224 181 148 134 376 1,875
West Virginia - 17 129 24 10 2 3 2 0 187 6 4 115 82 59 34 17 17 20 349
Wisconsin 1 82 91 40 39 11 7 5 3 278 2 114 331 308 359 550 152 162 334 2,310
Wyoming - 25 44 19 8 4 3 2 2 107 2 27 71 42 27 18 11 10 22 229
U.S. Total 868 5,538 6,836 2,330 1,326 740 397 255 277 17,699 6,543 7,983 19,386 11,373 8,830 7,018 4,551 3,654 8,587 71,383
Puerto Rico (3) 2 - 30 74 47 44 28 8 6 238 2 - 2 7 11 33 21 11 25 109
Grand Total 869 5,538 6,866 2,404 1,373 784 425 262 283 17,937 6,545 7,983 19,388 11,380 8,840 7,051 4,572 3,665 8,612 71,492

NATIONAL HIGHWAY SYSTEM LENGTH - 2014
  MILES BY MEASURED PAVEMENT ROUGHNESS - URBAN

October 2015
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 34 612 587 178 105 66 44 30 42 1,665
Alaska 6 27 83 38 24 18 13 8 20 231
Arizona 170 325 286 111 71 35 20 12 33 894
Arkansas 70 135 326 165 97 73 41 29 45 910
California 2,157 257 1,060 863 923 970 746 741 1,330 6,889
Colorado 1 126 452 285 262 193 124 85 156 1,682
Connecticut 0 167 327 212 175 133 81 58 110 1,264
Delaware 0 17 125 54 25 14 11 8 15 268
Dist. of Columbia 0 - 0 4 7 6 8 9 100 134
Florida 251 1,364 2,176 681 355 192 91 58 98 5,015
Georgia 234 890 1,322 447 238 137 80 54 113 3,281
Hawaii 2 25 63 57 58 53 36 26 48 366
Idaho 25 89 153 68 44 30 20 15 35 453
Illinois - 437 1,219 783 682 439 260 185 329 4,334
Indiana 94 489 643 328 244 186 125 93 198 2,306
Iowa 69 152 279 164 112 84 54 41 116 1,002
Kansas 57 237 220 81 86 50 37 35 20 766
Kentucky 48 305 295 109 66 41 26 17 30 889
Louisiana 141 203 329 213 195 173 114 95 193 1,514
Maine - 23 69 60 33 26 5 8 10 234
Maryland 83 352 572 229 164 124 82 62 171 1,757
Massachusetts 2,780 - - - - - - - - -
Michigan 2 405 871 534 407 315 235 191 459 3,418
Minnesota 28 272 463 188 121 78 45 30 61 1,258
Mississippi 0 255 388 181 128 91 57 45 125 1,269
Missouri 262 510 608 225 139 86 50 31 41 1,692
Montana 6 70 103 44 30 20 12 8 23 309
Nebraska 4 23 89 64 57 86 93 57 68 537
Nevada 33 177 178 75 48 27 12 7 12 535
New Hampshire 1 156 109 43 24 17 13 10 30 401
New Jersey 13 346 603 354 303 264 199 160 490 2,719
New Mexico 5 193 188 100 84 68 43 33 61 768
New York 43 189 1,250 829 589 423 326 234 1,054 4,893
North Carolina 143 516 1,158 542 332 182 95 64 121 3,010
North Dakota - 41 80 38 28 15 15 10 20 246
Ohio 7 517 1,318 696 491 329 232 160 387 4,131
Oklahoma 48 102 389 245 168 145 104 93 159 1,403
Oregon 64 179 366 180 115 84 55 36 74 1,091
Pennsylvania 179 421 1,079 667 537 388 270 205 401 3,968
Rhode Island 59 39 68 50 49 51 38 32 86 413
South Carolina 1 127 539 378 226 115 41 18 21 1,464
South Dakota 3 11 103 62 37 39 15 6 8 281
Tennessee 42 889 695 264 153 108 67 46 92 2,314
Texas 86 955 2,657 1,462 1,024 733 443 343 1,002 8,619
Utah - 156 389 195 109 57 18 5 5 935
Vermont 9 48 52 23 17 10 7 4 9 170
Virginia 141 148 601 310 228 171 99 73 84 1,714
Washington 0 275 514 309 247 192 156 139 381 2,214
West Virginia 6 20 244 105 69 37 20 19 21 535
Wisconsin 3 196 422 348 398 562 159 168 337 2,588
Wyoming 2 52 115 61 35 22 14 12 24 336
U.S. Total 7,411 13,522 26,223 13,703 10,155 7,758 4,948 3,909 8,864 89,082
Puerto Rico (3) 4 - 32 82 58 77 49 19 31 347
Grand Total 7,414 13,522 26,255 13,785 10,213 7,835 4,997 3,928 8,895 89,429

(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 March 21, 2016
Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000