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FHWA Home / Policy & Governmental Affairs / Highway Policy Information / Table HM-64 - Highway Statistics 2016

Highway Statistics 2016


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Functional System Length - 2016

September 18, 2017
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 8 383 124 27 18 7 3 1 1 563
Alaska 6 208 333 155 116 77 46 29 31 996
Arizona 1 506 264 81 35 16 6 3 4 916
Arkansas 0 146 181 57 25 14 7 4 5 439
California 3 437 392 155 92 49 24 13 21 1,183
Colorado - 150 251 121 53 31 22 14 6 648
Connecticut - 16 7 3 1 0 0 0 0 29
Delaware - - - - - - - - - -
Dist. of Columbia - - - - - - - - - -
Florida 11 438 233 21 9 3 1 1 0 706
Georgia 17 234 194 51 20 11 4 3 2 518
Hawaii - - - - - - - - - -
Idaho 0 235 204 46 17 9 3 2 3 519
Illinois - 691 468 71 10 1 - 2 - 1,243
Indiana 108 411 147 41 25 18 9 6 7 664
Iowa 28 246 218 66 35 10 4 2 4 584
Kansas 1 439 162 29 6 2 0 0 0 639
Kentucky 0 482 110 16 8 3 2 0 0 622
Louisiana 6 183 142 85 67 32 11 4 2 526
Maine - 184 64 29 - 0 0 0 - 278
Maryland - 64 63 8 4 1 1 1 0 142
Massachusetts 1 29 32 5 1 1 0 0 2 71
Michigan 6 223 219 59 31 18 6 3 2 561
Minnesota 29 200 252 57 27 13 7 3 2 560
Mississippi - 338 128 33 24 15 7 5 5 554
Missouri - 497 269 44 18 8 4 1 1 842
Montana - 405 556 86 27 13 5 1 2 1,094
Nebraska 5 263 107 25 9 3 2 1 1 409
Nevada - 398 29 7 5 6 2 1 0 448
New Hampshire - 121 19 2 0 - - - - 142
New Jersey - 19 21 2 1 1 0 0 0 45
New Mexico 6 555 203 48 16 8 4 3 4 841
New York 17 268 338 92 40 21 11 7 9 786
North Carolina 14 300 169 34 19 9 3 1 1 537
North Dakota - 282 188 30 8 1 1 0 0 510
Ohio 0 322 221 53 24 10 5 2 3 642
Oklahoma 7 283 242 57 25 17 7 5 3 640
Oregon - 244 177 52 15 4 2 1 1 495
Pennsylvania - 419 478 107 32 22 9 4 4 1,075
Rhode Island - 15 2 0 0 0 - - - 18
South Carolina - 202 236 57 30 13 5 2 1 546
South Dakota 21 205 284 50 18 7 3 2 0 570
Tennessee - 529 73 16 10 4 1 1 0 634
Texas - 911 776 190 71 32 11 5 4 2,001
Utah 1 388 239 41 10 4 1 1 0 683
Vermont 2 190 53 7 2 1 0 0 - 254
Virginia 0 235 278 53 21 7 2 0 1 598
Washington - 182 133 47 29 14 11 7 8 429
West Virginia 12 128 138 21 10 5 2 1 1 306
Wisconsin 7 200 159 62 38 27 10 6 4 506
Wyoming - 477 220 56 31 14 4 3 2 808
U.S. Total 314 14,283 9,796 2,458 1,134 579 270 150 148 28,819
Puerto Rico (4) - - 1 10 4 11 5 4 7 42
Grand Total 314 14,283 9,797 2,468 1,138 590 275 154 155 28,861

September 18, 2017
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 - - - - - - - - - - 6 961 779 140 56 30 15 9 9 1,999 26 843 1,812 589 392 147 51 38 30 3,902
Alaska - - - - - - - - - - 270 59 128 51 48 51 40 39 113 529 79 40 44 34 45 48 36 29 48 324
Arizona - 17 0 - 0 - - - 0 18 21 402 460 166 83 41 18 10 9 1,189 9 197 429 261 171 91 42 21 12 1,223
Arkansas 0 0 22 19 13 10 5 2 2 72 2 115 703 436 269 164 91 57 62 1,897 22 210 1,356 502 399 250 100 75 91 2,983
California 4 108 154 52 23 15 6 4 4 366 78 729 1,364 501 262 142 73 45 66 3,182 66 315 1,507 1,144 1,072 882 490 335 354 6,099
Colorado - 6 7 9 4 1 0 0 0 28 - 392 1,086 532 278 146 66 38 31 2,569 277 72 882 742 602 394 195 135 174 3,195
Connecticut - 16 12 3 2 1 1 0 0 36 - 4 51 30 17 9 3 3 2 119 0 2 48 59 54 37 12 6 4 220
Delaware - 2 12 6 3 0 1 0 - 24 0 34 68 11 2 2 0 0 0 118 0 30 52 12 5 1 1 1 1 103
Dist. of Columbia - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Florida 0 68 93 9 3 1 - 0 0 176 72 915 1,240 272 79 28 8 3 3 2,548 9 558 1,209 278 80 40 7 12 7 2,189
Georgia - - - - - - - - - - 231 658 1,063 259 107 42 18 7 11 2,164 34 794 2,327 770 280 87 33 16 36 4,343
Hawaii - - - - - - - - - - - 0 18 15 15 15 6 5 5 78 1 45 53 46 45 32 16 10 9 255
Idaho 2 50 48 6 3 1 0 0 0 109 20 341 828 264 109 49 20 13 14 1,639 8 241 636 194 111 57 27 12 17 1,295
Illinois - 1 17 10 15 5 - - - 48 - 341 1,012 502 279 153 46 16 5 2,354 17 193 2,359 1,063 897 211 - - - 4,723
Indiana 2 54 39 20 8 3 1 1 0 125 16 543 497 171 87 50 25 14 21 1,407 13 603 776 363 178 133 82 33 44 2,211
Iowa - - - - - - - - - - 129 818 1,015 554 360 223 121 93 97 3,281 20 - - - - - - - - -
Kansas 1 181 184 29 8 1 0 0 0 404 22 1,549 828 139 47 21 9 6 7 2,605 33 1,752 1,966 364 80 39 11 7 7 4,227
Kentucky 1 292 156 22 12 5 2 1 0 490 36 497 474 118 49 23 9 5 5 1,179 20 180 903 474 214 91 44 19 17 1,943
Louisiana 0 2 7 4 7 3 1 1 0 24 11 141 424 180 102 66 36 18 22 989 20 223 779 346 225 144 75 44 64 1,900
Maine - - - - - - - - - - - 74 367 155 112 31 23 9 3 775 5 65 309 227 141 91 46 23 26 926
Maryland - 43 20 3 1 1 1 1 0 69 0 143 118 28 13 9 4 3 3 321 3 197 347 111 33 11 3 1 0 705
Massachusetts - 8 8 1 0 0 1 0 1 20 0 15 58 39 25 16 9 6 9 177 - 16 128 70 43 25 10 14 5 310
Michigan 1 194 106 23 8 6 4 1 1 343 11 867 836 217 99 50 21 10 18 2,119 32 1,010 2,271 712 340 242 109 65 115 4,865
Minnesota 1 14 23 5 2 1 0 0 - 45 136 1,204 1,048 481 271 152 71 43 38 3,308 - 941 1,146 668 378 300 267 193 117 4,009
Mississippi - - - - - - - - - - - 470 724 264 152 86 44 24 20 1,783 37 478 1,163 612 565 449 242 125 112 3,747
Missouri - 400 457 111 32 13 4 2 1 1,020 1 601 905 260 109 46 22 10 7 1,960 28 82 1,275 1,294 672 364 143 70 49 3,949
Montana - - - - - - - - - - - 659 1,339 405 179 88 38 25 39 2,773 8 412 1,377 498 263 136 68 63 26 2,843
Nebraska 54 63 116 43 25 15 9 4 2 278 959 665 429 134 64 38 18 15 18 1,380 24 1,065 855 421 242 175 92 60 67 2,977
Nevada - - - - - - - - - - 5 923 450 60 17 9 11 11 18 1,499 1 134 425 117 30 7 3 1 1 718
New Hampshire - 9 0 - - - - - - 9 - 147 113 26 13 8 6 4 7 324 4 172 197 68 40 27 30 24 66 625
New Jersey - 7 18 5 3 1 0 0 0 35 - 26 43 25 22 19 11 6 7 160 1 19 89 63 38 37 23 6 6 281
New Mexico - - - - - - - - - - 12 730 706 230 127 67 29 17 19 1,925 9 239 416 430 363 258 207 142 217 2,273
New York 74 6 43 22 18 10 4 2 2 106 113 278 996 349 170 95 48 28 27 1,992 16 236 804 331 152 55 49 30 22 1,680
North Carolina 26 219 148 24 6 4 1 0 0 402 33 257 764 265 119 52 25 10 16 1,507 12 199 1,308 696 331 175 94 48 84 2,935
North Dakota - - - - - - - - - - 1 1,301 1,064 318 150 54 23 14 19 2,943 5 914 1,075 274 116 70 28 21 27 2,525
Ohio 0 133 131 34 17 8 4 2 2 330 2 416 698 214 101 43 21 11 12 1,517 10 521 1,285 448 275 64 22 10 25 2,649
Oklahoma - - - - - - - - - - 36 371 960 394 212 127 67 37 48 2,216 18 347 1,172 311 600 44 12 51 10 2,547
Oregon - - - - - - - - - - 1 583 1,330 421 181 76 34 19 11 2,656 12 186 958 516 304 134 60 36 30 2,224
Pennsylvania 0 134 137 29 17 13 7 4 3 345 - 330 698 242 126 72 33 21 39 1,560 - 246 1,544 1,299 582 432 178 133 120 4,534
Rhode Island - 4 2 2 2 1 - 0 0 11 - 4 11 15 17 18 11 9 13 97 0 6 8 13 10 13 8 7 8 72
South Carolina - 7 25 7 4 1 0 0 0 45 - 132 613 342 205 119 58 37 41 1,546 14 270 1,191 707 374 230 98 59 52 2,980
South Dakota 22 71 106 51 25 10 4 2 1 268 208 249 1,004 571 268 146 68 41 37 2,384 19 382 1,108 593 373 217 105 65 33 2,877
Tennessee - 17 5 1 0 0 - - - 23 16 757 668 193 76 47 15 9 13 1,778 19 845 1,483 309 113 60 46 35 34 2,925
Texas 4 - - - - - - - - - 1,078 2,134 3,057 1,211 546 244 88 46 35 7,360 85 - 124 204 182 116 22 6 - 653
Utah - 0 4 3 1 1 - 0 - 9 - 170 559 224 123 56 19 8 5 1,162 2 64 412 323 233 155 68 33 26 1,314
Vermont - - 1 1 - - - - - 2 1 66 137 46 24 15 8 6 7 309 5 140 290 91 63 39 26 24 55 728
Virginia 4 12 56 12 4 1 0 0 0 86 24 222 838 323 138 54 23 9 6 1,614 15 211 1,648 988 395 138 40 16 8 3,444
Washington - 140 279 105 36 16 14 10 14 614 0 183 649 262 113 52 26 13 16 1,313 9 276 682 401 261 180 97 59 65 2,021
West Virginia - - - - - - - - - - 6 104 447 216 117 59 29 18 23 1,013 360 3 518 391 205 91 67 37 31 1,344
Wisconsin 1 32 56 53 33 19 6 2 1 202 21 707 887 522 308 168 91 56 109 2,849 13 943 1,168 779 551 405 292 185 422 4,745
Wyoming - - - - - - - - - - 38 590 851 288 126 53 22 10 8 1,947 4 206 614 213 102 48 19 11 12 1,225
U.S. Total 197 2,310 2,495 724 333 166 77 39 37 6,181 3,615 23,877 35,406 13,083 6,571 3,421 1,620 965 1,170 86,113 1,427 17,122 44,528 21,421 13,218 7,470 3,796 2,445 2,787 112,786
Puerto Rico (4) - - - - - - - - - - 1 - 1 3 23 6 2 - 7 42 13 - - - - 18 30 38 132 218
Grand Total 197 2,310 2,495 724 333 166 77 39 37 6,181 3,616 23,877 35,407 13,086 6,594 3,427 1,622 965 1,177 86,155 1,440 17,122 44,528 21,421 13,218 7,488 3,826 2,483 2,919 113,004

September 18, 2017
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 9 248 84 33 25 15 10 6 3 424
Alaska 1 20 37 12 4 3 1 1 1 78
Arizona 0 149 67 23 8 3 2 0 0 252
Arkansas 0 71 110 54 28 17 11 10 10 310
California 2 243 411 212 145 98 58 43 52 1,262
Colorado - 62 123 55 38 13 6 4 3 304
Connecticut - 151 103 32 16 8 4 2 2 317
Delaware - 3 20 9 3 2 2 1 1 41
Dist. of Columbia 1 - 0 1 2 2 1 1 4 11
Florida 14 355 305 56 28 13 5 2 1 764
Georgia 29 331 224 60 29 19 9 5 5 682
Hawaii - 0 13 10 11 8 6 3 3 55
Idaho - 33 38 12 5 3 1 0 0 92
Illinois - 237 486 121 50 40 4 1 2 942
Indiana 96 138 111 59 35 22 12 9 10 397
Iowa 10 54 67 20 11 7 4 3 3 169
Kansas 9 108 67 26 14 7 2 1 1 226
Kentucky 0 135 54 15 8 4 3 1 1 220
Louisiana 2 103 96 52 50 50 26 15 11 403
Maine - 37 37 8 1 2 3 0 - 88
Maryland 0 140 116 26 19 14 8 7 8 338
Massachusetts 8 307 128 19 13 10 6 5 12 501
Michigan 5 179 263 90 56 40 23 17 12 680
Minnesota 235 28 38 8 6 4 3 1 3 90
Mississippi - 130 57 25 14 12 6 4 5 253
Missouri - 290 154 43 22 16 7 4 3 538
Montana - 36 48 7 3 2 1 1 0 98
Nebraska 4 20 26 9 5 2 1 1 0 64
Nevada - 70 43 17 10 5 2 1 1 150
New Hampshire - 63 15 3 1 1 0 0 0 83
New Jersey 1 118 147 44 25 14 11 10 18 386
New Mexico 2 104 32 8 4 2 1 0 0 152
New York 28 170 392 135 69 45 31 23 43 908
North Carolina 38 271 252 86 40 19 6 5 4 683
North Dakota - 23 29 6 2 1 0 0 0 61
Ohio 0 356 344 94 56 41 18 11 11 931
Oklahoma 1 78 116 38 19 14 8 6 7 285
Oregon - 75 107 25 12 8 4 2 1 234
Pennsylvania 7 215 335 99 61 31 16 11 10 779
Rhode Island - 19 22 5 2 2 1 0 0 52
South Carolina - 92 110 41 29 20 6 3 4 304
South Dakota 13 11 43 11 6 3 1 1 - 75
Tennessee 0 370 105 34 17 11 5 2 4 548
Texas 1 371 485 244 158 97 44 20 14 1,434
Utah 0 89 96 37 16 10 4 1 0 253
Vermont 2 33 22 4 2 1 0 0 0 63
Virginia 14 141 231 74 31 17 7 4 3 508
Washington - 116 119 42 23 14 7 7 7 335
West Virginia 6 101 84 19 12 8 3 1 2 230
Wisconsin 7 107 102 63 40 24 13 6 3 357
Wyoming - 36 35 17 8 4 3 1 2 106
U.S. Total 544 6,637 6,547 2,240 1,293 830 415 263 289 18,515
Puerto Rico (4) 2 - 30 74 47 44 28 7 6 236
Grand Total 546 6,637 6,577 2,314 1,340 874 443 270 295 18,751

September 18, 2017
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 3 9 8 4 2 1 1 0 0 26 7 461 486 144 82 56 33 23 34 1,320
Alaska - - - - - - - - - - 2 9 43 27 19 14 9 5 12 138
Arizona 39 67 77 15 10 5 1 0 0 175 188 90 162 122 97 62 41 29 54 657
Arkansas 0 5 30 23 14 11 6 7 5 102 18 19 120 116 96 73 50 38 99 610
California 8 251 506 293 194 118 73 45 67 1,548 311 127 544 701 852 872 729 657 1,968 6,451
Colorado - 33 131 68 41 23 12 7 8 324 0 44 214 183 174 139 95 74 144 1,068
Connecticut - 80 106 30 15 7 3 2 1 244 0 33 144 144 124 93 59 42 71 710
Delaware 0 6 17 5 2 1 0 0 0 32 1 22 83 32 18 13 7 6 13 195
Dist. of Columbia 0 - 2 2 3 2 1 1 4 15 2 - - 0 3 7 7 12 76 105
Florida 10 192 270 51 25 15 6 3 3 565 101 888 1,681 615 305 173 83 52 76 3,874
Georgia 37 41 49 20 14 7 4 2 2 138 564 424 808 260 133 82 40 30 50 1,827
Hawaii - 0 4 6 6 5 4 3 4 34 0 20 47 39 41 35 25 15 44 266
Idaho 1 11 10 2 1 1 1 1 1 29 49 49 111 65 46 33 24 16 41 386
Illinois - 8 44 28 17 11 9 - - 117 - 141 655 638 508 329 214 169 236 2,889
Indiana 16 44 46 24 12 8 4 3 3 144 186 242 415 227 174 130 84 66 138 1,476
Iowa - - - - - - - - - - 83 71 165 157 124 92 56 52 109 826
Kansas 7 83 65 17 6 5 3 2 3 184 14 80 99 43 31 21 12 8 12 306
Kentucky 5 36 16 7 5 3 2 1 0 70 53 152 196 84 55 39 21 16 28 592
Louisiana 0 6 10 8 12 14 9 7 6 72 41 78 222 160 136 116 90 74 157 1,033
Maine - 3 8 3 2 2 1 0 - 18 - 2 36 41 14 17 7 13 17 149
Maryland 0 94 129 34 20 15 8 5 5 310 7 164 278 133 100 85 57 48 139 1,003
Massachusetts 15 117 111 39 21 14 9 4 11 327 43 32 186 254 265 263 200 171 447 1,820
Michigan 2 82 158 59 26 13 7 5 4 354 30 136 446 384 327 274 202 170 395 2,335
Minnesota 165 17 19 8 4 3 2 0 1 55 227 110 135 54 33 24 11 8 15 389
Mississippi - 16 31 7 5 3 1 1 1 64 0 123 262 154 109 86 57 41 125 956
Missouri 4 150 202 61 34 18 9 5 5 483 10 117 293 141 105 81 49 35 62 884
Montana - - - - - - - - - - - 23 70 44 32 23 14 13 34 254
Nebraska 32 13 35 13 9 8 6 4 10 98 100 11 38 26 28 28 20 20 50 222
Nevada - 27 8 9 6 3 1 0 0 55 6 117 99 49 32 21 12 8 13 352
New Hampshire - 55 15 3 0 1 0 0 - 74 0 42 66 33 23 16 10 9 23 222
New Jersey 0 131 178 52 30 22 14 10 15 453 1 106 326 233 221 204 157 142 410 1,800
New Mexico - 1 7 3 0 0 0 - - 12 28 93 162 106 91 70 45 30 60 656
New York 94 35 198 118 92 80 62 52 87 724 246 87 640 477 375 292 223 192 609 2,895
North Carolina 50 141 188 59 25 11 6 2 4 437 55 130 654 420 269 154 87 55 163 1,931
North Dakota - - - - - - - - - - 3 27 55 32 29 19 11 8 24 204
Ohio 1 173 245 68 38 23 15 9 12 582 123 200 587 366 314 230 153 128 331 2,308
Oklahoma 17 31 73 30 19 15 8 5 5 186 88 71 197 169 139 129 107 90 180 1,082
Oregon 0 23 22 7 3 2 1 1 1 59 2 86 263 161 116 81 53 34 60 854
Pennsylvania 4 80 211 104 69 38 21 9 9 542 2 183 649 496 408 330 224 180 376 2,845
Rhode Island 1 14 28 16 11 5 3 1 3 80 10 2 18 29 43 49 41 41 110 333
South Carolina - 13 34 16 8 7 3 1 1 84 - 49 291 252 188 130 68 35 52 1,064
South Dakota - 1 9 3 2 1 1 0 0 18 13 5 28 19 15 13 10 7 23 121
Tennessee 3 74 55 21 14 7 4 2 3 179 64 499 612 234 154 112 53 55 108 1,826
Texas 90 195 522 299 196 126 56 27 19 1,439 880 473 1,256 846 667 549 372 288 752 5,203
Utah 5 16 18 6 2 1 0 0 0 44 5 95 254 125 74 45 24 16 17 650
Vermont 0 3 8 2 1 1 0 0 - 16 6 11 37 19 13 8 5 5 12 109
Virginia 8 68 172 55 28 17 8 3 2 353 16 39 367 282 226 168 107 77 86 1,354
Washington - 114 181 53 25 15 8 6 14 417 18 48 249 243 191 156 108 100 327 1,422
West Virginia - 0 3 2 2 3 2 1 1 14 8 24 161 75 48 28 20 15 20 393
Wisconsin 5 43 85 84 59 35 14 6 8 333 48 88 273 293 305 248 180 138 365 1,891
Wyoming - 1 0 1 0 0 0 - 0 3 15 29 70 34 24 15 11 8 22 212
U.S. Total 622 2,604 4,349 1,837 1,127 728 411 246 330 11,633 3,670 6,171 15,256 9,982 7,997 6,326 4,380 3,566 8,789 62,467
Puerto Rico (4) 2 - - 3 9 12 11 7 8 50 13 - 4 26 53 65 74 55 111 388
Grand Total 624 2,604 4,349 1,840 1,136 740 422 253 338 11,683 3,683 6,171 15,260 10,008 8,050 6,391 4,454 3,621 8,900 62,855

(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 November 1, 2017
Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000