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FHWA Home / Policy & Governmental Affairs / Highway Policy Information / Table HM-64 - Highway Statistics 2014

Highway Statistics 2014


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Functional System Length - 2014

October 2015
Table HM-64
1 of 4

MILES BY MEASURED PAVEMENT ROUGHNESS - RURAL

STATE INTERNATIONAL ROUGHNESS INDEX (IRI) (1)
INTERSTATE
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
Alaska 12 169 329 178 130 86 48 24 27 991
Arizona 1 488 291 73 32 22 7 4 4 920
Arkansas 5 170 149 43 22 11 5 3 2 405
California 23 358 418 151 119 67 31 17 23 1,185
Colorado - 99 283 128 63 39 20 10 6 648
Connecticut - 9 13 5 0 1 0 0 0 29
Delaware - - - - - - - - - -
Dist. of Columbia - - - - - - - - - -
Florida 75 395 217 18 9 2 1 0 0 643
Georgia 0 250 187 58 23 10 4 2 2 536
Hawaii - - - - - - - - - -
Idaho - 276 169 45 17 7 4 3 1 522
Illinois - 597 509 121 16 - - - - 1,243
Indiana 101 376 150 43 25 17 10 6 8 634
Iowa 3 285 204 64 28 12 6 3 7 609
Kansas - 435 163 30 13 4 2 0 0 647
Kentucky 7 443 103 22 8 4 1 1 0 582
Louisiana 1 224 123 82 59 30 9 4 2 532
Maine - 193 81 19 - 6 - 0 - 299
Maryland 1 54 70 11 3 1 1 0 1 141
Massachusetts 64 - - - - - - - - -
Michigan 0 210 223 62 30 20 13 4 5 566
Minnesota - 210 261 62 28 17 9 4 2 594
Mississippi - 279 133 29 14 8 4 4 2 473
Missouri 0 511 265 38 16 6 3 2 1 841
Montana - 401 571 77 27 12 4 1 2 1,094
Nebraska - 245 132 38 1 1 - - - 416
Nevada 0 205 70 33 35 33 25 19 29 448
New Hampshire - 117 18 4 1 1 1 0 0 142
New Jersey - 25 16 2 1 1 0 0 0 45
New Mexico 1 583 196 38 15 6 4 1 1 845
New York - 198 439 92 33 15 8 6 11 803
North Carolina 11 322 156 33 15 7 1 1 1 536
North Dakota - 220 235 42 11 2 1 0 0 511
Ohio 0 245 322 55 15 4 2 0 0 643
Oklahoma - 263 278 72 17 7 7 1 0 646
Oregon 2 225 192 54 14 4 3 1 1 493
Pennsylvania 1 465 472 108 41 16 7 8 3 1,119
Rhode Island - 15 2 0 0 0 - - 0 18
South Carolina - 214 265 52 12 3 0 - 0 546
South Dakota - 127 391 57 14 1 1 - 0 591
Tennessee 1 535 62 10 8 3 1 1 1 621
Texas - 713 957 206 72 31 10 6 5 2,001
Utah - 335 317 31 1 0 - 0 - 684
Vermont 2 186 58 7 5 1 - 0 - 257
Virginia 1 171 325 101 38 10 2 1 1 649
Washington - 173 144 47 23 16 9 6 6 425
West Virginia - 40 259 37 30 3 - - - 368
Wisconsin - 154 156 63 44 27 11 8 2 464
Wyoming 0 364 304 71 38 16 7 4 3 807
U.S. Total 312 12,895 10,843 2,653 1,184 601 284 160 163 28,783
Puerto Rico (4) - - 1 10 4 11 5 4 7 42
Grand Total 312 12,895 10,844 2,663 1,188 612 289 164 170 28,825

October 2015
Table HM-64
2 of 4

MILES BY MEASURED PAVEMENT ROUGHNESS - RURAL

STATE INTERNATIONAL ROUGHNESS INDEX (IRI) (1)
OTHER FREEWAYS & EXPRESSWAYS OTHER PRINCIPAL ARTERIAL MINOR ARTERIAL (3)
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 NOT REPORTED (2) < 60 60-94 95-119 120-144 145-170 171-194 195-220 > 220 TOTAL REPORTED
Alabama - - - - - - - - - - 3 920 819 152 62 36 18 10 9 2,025 206 945 1,615 747 284 133 47 22 23 3,817
Alaska - - - - - - - - - - 270 63 118 66 58 49 44 39 96 532 14 34 49 38 51 49 39 25 45 329
Arizona - 17 - 0 - - - - 0 18 18 483 416 141 80 40 16 7 5 1,188 41 277 408 218 130 72 31 11 12 1,158
Arkansas 2 4 38 18 13 7 2 1 1 83 86 293 824 342 188 98 44 19 12 1,819 56 425 1,416 492 280 185 84 70 40 2,992
California 67 7 43 26 19 8 5 2 7 117 1,991 253 615 287 173 99 37 24 59 1,545 3,270 129 501 353 389 325 164 198 204 2,263
Colorado - 6 7 9 5 1 0 0 - 28 - 485 1,090 488 252 133 60 31 30 2,569 - 95 809 825 684 290 196 56 188 3,142
Connecticut - 11 14 6 3 1 - 0 0 36 - 2 46 32 17 8 3 3 4 114 - 2 43 56 52 28 13 7 19 219
Delaware - 1 15 6 0 1 0 0 - 24 - 37 71 9 3 1 0 0 0 121 - 9 62 25 1 6 0 0 2 106
Dist. of Columbia - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Florida - 77 85 6 2 1 0 0 - 173 76 940 1,242 252 69 28 7 4 4 2,544 13 488 1,222 297 99 42 9 11 10 2,178
Georgia - - - - - - - - - - 34 757 1,148 259 94 42 14 8 8 2,332 61 1,223 2,346 654 233 68 22 10 34 4,590
Hawaii - - - - - - - - - - - 1 18 17 16 11 6 4 5 78 - 32 31 55 56 37 23 9 11 254
Idaho - - - - - - - - - - 20 491 850 245 92 41 18 11 9 1,755 89 282 676 205 94 52 23 15 27 1,375
Illinois - 1 17 12 - - - - - 30 - 406 1,088 377 249 112 23 10 8 2,272 - 629 2,042 1,156 588 143 19 - 9 4,586
Indiana 0 69 35 13 10 3 1 0 0 131 5 614 535 153 72 34 18 8 19 1,453 1 769 814 207 119 148 38 22 45 2,163
Iowa - - - - - - - - - - 156 807 985 468 309 215 135 95 164 3,178 77 707 1,155 494 361 307 225 155 358 3,763
Kansas 1 167 192 33 8 3 1 0 0 405 16 1,569 790 159 59 33 13 7 5 2,635 1 1,882 1,751 272 124 164 27 20 11 4,251
Kentucky 6 319 158 22 11 5 2 1 1 518 20 472 520 135 45 19 7 4 4 1,206 23 185 1,018 573 278 138 46 26 20 2,283
Louisiana 31 - - - - - - - - - 2 199 414 149 92 65 34 19 21 993 16 192 636 305 213 120 42 29 45 1,583
Maine - - - - - - - - - - - 43 332 219 106 59 27 1 1 788 - 47 301 252 184 106 36 18 9 953
Maryland - - - - - - - - - - 3 156 129 19 13 6 3 3 3 332 19 173 342 119 50 14 4 5 - 707
Massachusetts 10 - - - - - - - - - 105 - - - - - - - - - 297 - - - - - - - - -
Michigan 0 186 104 26 12 8 4 2 1 344 4 1,009 760 187 83 43 19 11 18 2,131 3 1,279 2,030 515 271 202 125 103 166 4,691
Minnesota - 0 1 1 1 0 0 0 0 4 35 1,056 1,264 532 275 158 71 40 50 3,446 58 2,207 1,794 611 414 380 382 315 372 6,475
Mississippi - - - - - - - - - - - 602 757 240 138 72 31 15 14 1,868 - 595 1,329 705 520 312 153 65 48 3,726
Missouri 1 360 443 83 21 7 3 1 1 919 11 655 834 276 127 72 38 18 14 2,035 66 186 1,470 1,070 636 289 150 63 53 3,917
Montana - - - - - - - - - - - 715 1,327 389 166 80 37 24 35 2,773 - 464 1,317 496 237 138 65 30 27 2,772
Nebraska 1 33 196 78 22 1 4 9 2 346 6 995 698 299 209 77 28 40 12 2,359 - 891 1,238 927 684 173 217 7 16 4,153
Nevada - - - - - - - - - - 5 396 678 276 76 20 14 16 24 1,500 - 98 350 190 59 12 4 2 1 715
New Hampshire - 5 1 1 1 0 0 0 0 9 1 120 111 32 20 14 10 8 9 323 - 175 213 73 49 36 24 18 38 626
New Jersey - 8 18 5 2 1 0 - 0 35 0 19 35 30 29 18 11 6 10 157 17 10 70 75 45 43 19 3 8 272
New Mexico - - - - - - - - - - 19 809 637 188 94 51 21 13 11 1,825 - 439 530 338 216 172 96 61 55 1,908
New York - 6 57 18 15 11 4 1 1 113 3 159 1,078 443 246 104 47 34 19 2,129 2 139 942 938 338 237 171 93 11 2,871
North Carolina 15 224 143 19 7 3 1 0 0 397 27 270 823 248 100 39 17 10 13 1,520 21 77 1,322 779 435 180 75 63 65 2,997
North Dakota - - - - - - - - - - - 1,005 1,240 380 147 76 38 23 41 2,950 - 577 1,157 330 188 109 65 39 51 2,516
Ohio 0 93 194 28 11 1 1 0 0 330 0 347 766 250 91 43 9 4 3 1,513 6 519 1,385 545 92 88 - - 6 2,635
Oklahoma - - - - - - - - - - - 292 1,021 417 332 101 38 19 31 2,252 - 468 1,154 276 526 132 23 87 - 2,665
Oregon - - - - - - - - - - 14 501 1,345 438 192 91 41 20 17 2,644 65 237 952 448 271 135 54 35 27 2,159
Pennsylvania 10 110 138 33 19 13 7 4 4 329 16 296 718 268 144 72 37 22 23 1,579 - 295 1,517 1,329 545 445 203 97 99 4,530
Rhode Island - - - - - - - - - - 2 1 13 16 11 9 6 5 10 70 42 6 4 5 9 11 8 6 4 53
South Carolina - 11 31 1 3 - - - - 45 - 98 801 381 183 58 9 15 3 1,547 - 68 886 937 923 133 39 - - 2,986
South Dakota - - - - - 6 - - - 6 1 340 1,449 599 264 156 47 7 13 2,875 2 382 1,581 522 249 89 136 3 1 2,962
Tennessee - - - - - - - - - - 8 849 634 160 69 27 13 7 5 1,765 41 772 1,351 535 156 80 43 24 42 3,004
Texas - 1 2 0 0 0 - - 0 4 13 1,797 3,696 1,635 726 318 123 55 60 8,410 2,856 664 2,799 1,999 1,137 642 215 89 70 7,614
Utah - - 3 3 3 - - - - 9 - 119 535 339 112 41 11 5 0 1,162 - 3 358 304 377 161 66 46 3 1,318
Vermont - 0 1 0 - - - - - 2 1 72 145 46 22 12 5 5 6 311 6 140 307 72 50 38 30 27 58 722
Virginia 0 10 40 13 4 1 0 0 0 68 22 211 791 232 86 31 11 6 3 1,370 103 150 1,705 1,083 394 155 51 12 16 3,566
Washington - 139 279 99 40 18 15 11 11 612 - 202 633 247 113 56 21 14 12 1,297 - 185 677 462 298 199 95 61 51 2,028
West Virginia - - - - - - - - - - 2 28 453 291 162 90 20 12 15 1,071 10 - 341 519 144 191 38 48 47 1,328
Wisconsin - 44 46 37 30 21 7 3 1 189 0 542 751 887 292 198 96 63 99 2,927 - 386 487 580 2,584 204 207 116 158 4,721
Wyoming - - - - - - - - - - 7 456 916 347 147 64 24 11 13 1,978 0 126 552 249 140 67 32 16 12 1,195
U.S. Total 145 1,911 2,303 595 262 122 59 38 31 5,321 3,003 22,950 36,957 14,046 6,700 3,321 1,421 830 1,044 87,270 7,481 20,065 47,059 24,254 16,257 7,481 3,871 2,238 2,614 123,840
Puerto Rico (4) - - - - - - - - - - 1 - 1 3 23 6 2 - 7 42 13 - - - - 18 30 38 132 218
Grand Total 145 1,911 2,303 595 262 122 59 38 31 5,321 3,004 22,950 36,958 14,049 6,723 3,327 1,423 830 1,051 87,312 7,494 20,065 47,059 24,254 16,257 7,499 3,901 2,276 2,746 124,058

October 2015
Table HM-64
3 of 4

MILES BY MEASURED PAVEMENT ROUGHNESS - URBAN

STATE INTERNATIONAL ROUGHNESS INDEX (IRI) (1)
INTERSTATE
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
Alaska 2 19 37 10 5 3 1 1 1 77
Arizona 0 142 70 18 10 4 2 0 0 247
Arkansas 6 74 107 40 23 19 10 7 8 288
California 88 107 398 207 154 109 64 51 66 1,156
Colorado - 45 134 56 36 15 7 5 4 304
Connecticut - 104 123 43 23 12 6 3 4 317
Delaware - 3 19 9 4 2 2 1 1 41
Dist. of Columbia - - 0 0 5 3 1 2 1 12
Florida 72 357 263 44 24 10 5 2 1 706
Georgia 0 332 229 72 36 19 11 6 4 711
Hawaii - 1 14 9 11 8 6 3 3 55
Idaho - 38 34 9 5 2 1 1 0 90
Illinois - 243 476 114 82 17 6 1 2 942
Indiana 74 155 114 51 32 19 12 10 6 399
Iowa 6 62 63 21 10 6 4 2 6 173
Kansas 2 98 59 32 20 10 4 2 1 226
Kentucky 8 119 62 12 5 2 1 1 0 203
Louisiana 1 101 87 51 46 41 23 12 11 371
Maine - 22 23 16 2 4 - - - 67
Maryland 3 116 135 31 16 13 7 6 10 336
Massachusetts 509 - - - - - - - - -
Michigan 0 167 259 106 57 37 27 17 15 685
Minnesota - 74 136 50 26 15 9 5 5 320
Mississippi - 107 66 21 13 9 5 3 2 226
Missouri 1 266 171 44 24 16 8 4 4 537
Montana - 46 38 6 3 2 1 0 1 98
Nebraska - 5 27 26 4 4 1 - - 66
Nevada 8 49 49 19 12 8 2 1 1 141
New Hampshire - 62 16 2 1 1 0 0 - 83
New Jersey 3 132 125 48 27 15 11 9 17 384
New Mexico - 102 29 8 7 4 1 1 1 153
New York 2 115 451 143 72 46 33 22 50 932
North Carolina 36 268 262 78 37 17 6 4 2 674
North Dakota - 22 32 4 1 0 - 0 0 60
Ohio - 267 441 143 51 16 8 2 2 931
Oklahoma - 48 135 54 21 15 4 6 4 286
Oregon 4 71 104 27 12 10 4 2 1 231
Pennsylvania 8 221 314 88 54 28 18 10 6 739
Rhode Island 0 24 19 5 2 1 0 0 0 52
South Carolina - 81 148 45 22 6 2 0 0 304
South Dakota 0 5 51 23 7 1 - - - 88
Tennessee 2 326 92 30 15 8 4 3 3 481
Texas 13 314 568 227 139 89 35 19 11 1,403
Utah - 78 113 42 16 4 0 0 - 253
Vermont 2 36 19 3 2 1 0 - - 60
Virginia 14 80 209 77 40 25 11 9 5 455
Washington - 121 124 41 23 11 7 5 5 338
West Virginia - 17 129 24 10 2 3 2 0 187
Wisconsin 1 82 91 40 39 11 7 5 3 278
Wyoming - 25 44 19 8 4 3 2 2 107
U.S. Total 868 5,538 6,836 2,330 1,326 740 397 255 277 17,699
Puerto Rico (4) 2 - 30 74 47 44 28 7 6 236
Grand Total 870 5,538 6,866 2,404 1,373 784 425 262 283 17,935

October 2015
Table HM-64
4 of 4

MILES BY MEASURED PAVEMENT ROUGHNESS - URBAN

STATE INTERNATIONAL ROUGHNESS INDEX (IRI) (1)
OTHER FREEWAYS & EXPRESSWAYS OTHER PRINCIPAL ARTERIAL
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 12 10 4 2 1 0 0 0 30 25 439 473 136 78 50 33 25 32 1,266
Alaska - - - - - - - - - - 4 7 40 26 17 14 10 6 15 134
Arizona 22 90 71 18 9 2 1 0 1 194 213 104 193 109 80 46 28 20 53 633
Arkansas 1 19 41 16 9 7 7 5 4 109 64 42 199 130 75 55 28 20 40 591
California 179 101 393 274 194 143 78 50 71 1,303 2,087 50 265 386 585 716 636 679 1,245 4,561
Colorado - 36 129 68 39 22 14 7 10 324 0 50 192 164 190 156 105 71 140 1,068
Connecticut 0 59 105 38 19 11 6 2 2 243 - 4 99 131 133 110 70 53 103 702
Delaware - 3 19 6 2 1 0 0 - 33 - 10 85 37 19 12 8 7 15 194
Dist. of Columbia - - - 3 3 3 1 2 4 16 0 - - - - - 7 5 95 106
Florida 35 197 249 45 23 13 6 4 2 538 151 844 1,703 599 305 165 78 49 81 3,823
Georgia 6 43 54 23 17 9 5 2 2 154 217 494 967 328 170 100 58 40 88 2,247
Hawaii - - 4 6 7 5 3 3 5 34 2 24 45 41 38 38 24 19 34 263
Idaho - - - - - - - - - - 55 52 122 64 46 33 22 17 40 396
Illinois - 2 53 22 12 10 9 - 0 109 - 192 715 660 604 403 233 176 239 3,221
Indiana 0 54 42 24 15 9 4 4 5 157 26 237 430 239 191 154 106 77 183 1,617
Iowa - - - - - - - - - - 53 91 217 143 101 77 49 37 106 821
Kansas 3 77 64 14 12 6 3 1 1 177 53 63 97 36 54 35 27 31 16 358
Kentucky 2 37 26 7 5 3 1 0 1 80 33 148 203 87 53 36 23 15 28 593
Louisiana 4 7 7 6 6 6 4 2 2 39 115 80 200 145 131 116 83 77 170 1,002
Maine - 1 9 4 2 1 0 - - 18 - 0 37 38 25 15 4 7 9 135
Maryland 5 85 130 33 19 12 8 5 7 300 38 160 320 168 130 99 67 52 153 1,149
Massachusetts 322 - - - - - - - - - 1,980 - - - - - - - - -
Michigan 0 98 150 54 24 15 9 6 4 359 1 140 461 372 323 261 198 168 435 2,358
Minnesota 0 32 67 24 14 11 6 3 5 162 36 167 259 113 79 53 30 22 50 772
Mississippi - 27 31 8 5 3 2 1 1 77 0 121 292 153 111 80 51 41 122 971
Missouri 30 142 186 54 29 16 7 5 3 442 235 103 251 127 87 54 34 23 34 714
Montana - - - - - - - - - - 6 24 68 43 31 21 15 10 35 248
Nebraska - 9 38 12 3 12 7 6 5 93 12 10 29 29 51 74 85 52 63 394
Nevada 0 17 15 9 9 3 1 0 0 55 23 111 113 44 26 15 8 5 10 334
New Hampshire - 49 17 5 2 1 0 0 0 74 0 43 70 33 18 13 11 8 25 222
New Jersey 1 119 178 57 32 22 17 11 16 452 10 93 293 242 238 220 164 133 412 1,794
New Mexico - - - - - - - - - - 20 92 180 111 91 74 46 36 68 697
New York 2 33 250 165 86 93 71 47 69 814 33 40 541 507 418 279 215 159 905 3,064
North Carolina 40 121 206 55 25 11 5 2 3 429 70 144 691 407 263 151 83 56 112 1,907
North Dakota - - - - - - - - - - - 19 47 35 27 15 15 9 20 188
Ohio 2 127 292 99 33 19 6 4 3 583 79 112 517 406 365 268 200 143 338 2,349
Oklahoma 2 14 95 46 19 13 3 2 2 195 89 48 197 171 154 130 110 97 172 1,080
Oregon 3 22 20 5 3 2 1 0 1 55 71 86 242 148 97 72 46 31 62 785
Pennsylvania 15 69 192 99 68 37 22 10 12 508 151 131 564 471 404 310 223 180 369 2,652
Rhode Island 1 13 29 16 9 4 3 2 1 77 59 2 20 29 38 45 35 30 84 284
South Carolina - 22 35 16 6 3 3 - 0 84 1 23 355 313 195 105 36 17 19 1,063
South Dakota - - 3 9 3 1 0 0 - 16 3 6 31 20 22 30 12 5 8 133
Tennessee 5 66 49 15 11 6 2 2 2 153 39 496 557 221 125 91 57 37 84 1,669
Texas 16 185 592 301 202 114 54 27 19 1,494 96 490 1,584 977 709 546 363 305 1,004 5,978
Utah - 13 18 8 3 1 0 - - 44 - 65 255 151 94 58 18 7 5 653
Vermont 0 1 8 2 2 2 0 1 0 16 7 11 32 18 14 9 6 5 11 106
Virginia 18 33 109 34 23 12 4 2 2 218 114 37 309 239 206 169 103 79 95 1,237
Washington 0 110 176 59 29 17 10 6 8 415 0 45 212 206 190 160 133 122 352 1,420
West Virginia - 0 2 2 3 3 1 - 2 13 7 3 114 80 56 31 16 17 18 335
Wisconsin 1 46 102 84 89 32 10 14 5 382 1 67 231 226 291 518 140 157 343 1,972
Wyoming - 1 0 0 0 0 0 - 0 3 2 26 70 42 27 18 11 10 22 226
U.S. Total 714 2,193 4,271 1,849 1,129 714 394 241 279 11,070 6,278 5,847 15,186 9,600 7,775 6,301 4,164 3,448 8,163 60,483
Puerto Rico (4) 2 - - 3 9 12 11 7 8 50 13 - 4 26 53 65 74 55 111 388
Grand Total 716 2,193 4,271 1,852 1,138 726 405 248 287 11,120 6,291 5,847 15,190 9,626 7,828 6,366 4,238 3,503 8,274 60,871

(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. Includes structures.

(2) May include unpaved miles.

(3) Estimated from sample data.

(4) 2009 data.

 

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