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FHWA Home / Policy & Governmental Affairs / Highway Policy Information / Table HM-64 - Highway Statistics 2017

Highway Statistics 2017


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Functional System Length - 2017

August 23, 2018
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 9 354 139 35 18 12 2 1 1 562
Alaska 1 204 341 157 114 78 45 26 35 1,001
Arizona 16 537 221 71 35 19 8 5 3 900
Arkansas 1 218 147 37 16 10 4 2 3 438
California 3 437 392 155 92 49 24 13 21 1,183
Colorado - 134 270 127 49 31 22 10 4 648
Connecticut - 17 7 3 1 0 0 0 0 29
Delaware - - - - - - - - - -
Dist. of Columbia - - - - - - - - - -
Florida 35 537 127 10 5 3 0 0 0 682
Georgia - 216 209 65 26 12 5 2 2 537
Hawaii - - - - - - - - - -
Idaho - 270 180 40 18 7 3 1 1 520
Illinois - 716 390 76 29 18 8 4 3 1,243
Indiana 42 450 171 42 26 17 9 6 7 728
Iowa 20 246 219 67 33 15 6 3 2 591
Kansas - 397 173 45 15 6 2 1 0 639
Kentucky 23 419 121 28 14 10 3 1 1 598
Louisiana 13 183 132 87 67 32 12 4 2 520
Maine 0 151 79 28 14 4 2 0 0 279
Maryland - 63 59 13 4 1 1 0 1 142
Massachusetts - 36 22 3 1 0 0 0 1 63
Michigan 6 219 224 57 29 18 7 4 3 561
Minnesota - 227 267 41 28 12 6 4 2 588
Mississippi - 375 118 32 22 13 6 2 1 569
Missouri - 545 230 38 15 8 4 1 0 842
Montana 19 556 391 69 29 12 7 5 7 1,075
Nebraska 0 240 125 29 12 5 2 1 1 414
Nevada - 395 32 7 4 4 4 1 0 447
New Hampshire - 116 22 3 1 - - - - 142
New Jersey - 21 21 1 1 1 0 0 - 45
New Mexico 2 532 214 58 26 9 3 2 2 845
New York 2 306 323 86 42 19 10 7 8 801
North Carolina 0 325 151 33 21 13 5 2 1 551
North Dakota - 282 185 31 8 2 1 0 0 510
Ohio - 350 197 51 19 12 6 3 3 643
Oklahoma 0 307 245 46 23 12 7 4 2 646
Oregon - 244 177 52 15 4 2 1 1 495
Pennsylvania - 451 435 104 52 22 11 6 6 1,086
Rhode Island - 15 3 0 - - - - - 18
South Carolina - 181 239 61 31 20 8 4 3 546
South Dakota - 221 294 47 17 7 4 1 0 591
Tennessee 0 528 85 16 9 4 1 1 0 644
Texas 11 946 793 160 56 21 8 3 2 1,990
Utah 0 329 277 59 12 4 2 1 1 684
Vermont 1 192 52 7 3 1 1 0 - 255
Virginia - 252 271 45 17 9 2 1 0 598
Washington - 170 145 41 28 18 10 8 9 429
West Virginia 1 143 135 21 10 5 3 1 1 319
Wisconsin - 221 140 70 40 24 7 5 5 512
Wyoming - 483 215 57 30 14 4 3 2 807
U.S. Total 205 14,755 9,406 2,415 1,177 617 288 153 145 28,957
Puerto Rico 6 1 7 7 2 3 2 3 13 38
Grand Total 211 14,756 9,413 2,422 1,179 620 290 156 159 28,995

August 23, 2018
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 - - - - - - - - - - 15 848 873 165 63 30 16 9 10 2,014 27 890 2,130 456 210 95 35 8 38 3,862
Alaska - - - - - - - - - - 277 64 117 51 48 51 40 34 117 522 84 37 50 31 44 49 37 30 47 325
Arizona - 17 0 0 0 - - - - 18 22 428 415 162 91 48 22 14 8 1,187 10 225 448 224 150 85 43 22 14 1,210
Arkansas - 0 32 17 11 7 4 1 1 72 2 224 802 382 216 122 63 33 33 1,875 22 200 1,305 650 367 281 103 75 80 3,061
California 4 108 154 52 23 15 6 4 4 366 77 728 1,365 501 261 142 73 45 67 3,182 24 342 1,480 1,139 1,118 871 527 329 317 6,122
Colorado - 5 8 7 5 2 0 0 - 28 - 536 1,075 485 235 125 58 29 25 2,569 289 80 913 701 566 381 195 159 189 3,183
Connecticut - 16 12 3 2 1 1 0 0 36 - 7 50 32 17 9 4 2 1 122 0 0 43 58 63 25 15 7 5 218
Delaware 1 1 9 4 2 0 0 0 - 17 - 30 56 9 2 2 0 - 0 99 0 25 45 12 4 1 0 1 0 89
Dist. of Columbia - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Florida 0 73 91 8 2 1 1 - 0 176 69 1,042 1,161 234 74 26 8 3 3 2,551 9 615 1,182 248 78 41 6 12 7 2,188
Georgia - - - - - - - - - - 14 660 1,200 329 122 57 20 9 10 2,408 41 916 2,172 831 350 179 47 26 42 4,563
Hawaii - - - - - - - - - - - 1 22 15 10 13 7 4 6 78 1 41 57 39 43 33 18 10 14 255
Idaho - 54 48 6 2 1 0 0 - 112 44 414 777 240 101 44 22 10 10 1,619 7 225 496 156 110 60 16 7 8 1,079
Illinois - 1 15 17 7 7 1 0 0 48 - 339 951 468 283 189 57 40 28 2,354 16 151 1,996 1,364 716 314 104 45 26 4,717
Indiana 4 65 37 18 13 4 2 1 0 141 54 508 541 191 99 55 27 15 14 1,451 13 574 861 289 155 113 47 30 25 2,096
Iowa - - - - - - - - - - 194 774 1,093 583 347 193 100 64 76 3,231 19 - - - - - - - - -
Kansas - 170 185 34 10 3 1 0 0 404 8 1,569 776 147 61 35 16 8 6 2,619 36 1,353 2,170 390 182 67 31 20 18 4,230
Kentucky 19 291 137 22 10 5 4 1 1 472 43 497 466 117 49 22 8 5 7 1,171 21 215 1,027 546 247 113 44 28 30 2,249
Louisiana 1 1 7 4 6 3 2 1 0 24 34 124 417 186 99 61 37 19 24 966 20 141 745 383 266 164 91 52 61 1,903
Maine - - - - - - - - - - 2 189 305 112 54 38 23 17 36 774 5 164 333 150 98 63 38 29 58 933
Maryland - 42 22 3 0 0 0 0 1 69 0 143 127 25 10 6 3 3 3 321 3 197 346 108 29 17 4 3 2 705
Massachusetts - 5 5 1 0 - - 0 0 11 - 15 42 23 11 6 2 2 4 105 5 37 106 66 46 20 18 9 8 311
Michigan 0 195 101 26 9 5 4 2 1 344 0 880 828 223 104 47 21 11 16 2,130 10 987 2,217 767 357 263 116 73 104 4,883
Minnesota - 9 16 5 3 1 0 0 0 34 0 1,248 1,108 485 283 163 81 43 43 3,454 23 1,506 1,849 1,116 988 677 213 96 165 6,610
Mississippi - - - - - - - - - - - 501 721 249 144 86 41 21 22 1,783 37 513 1,189 606 553 422 237 126 108 3,754
Missouri - 534 450 93 31 11 4 2 1 1,125 0 681 815 227 89 35 18 8 7 1,879 28 135 1,340 1,171 663 359 189 78 47 3,983
Montana - - - - - - - - - - 8 658 1,329 414 178 84 38 25 39 2,765 8 443 1,336 509 255 150 54 36 41 2,824
Nebraska 5 64 135 61 32 17 10 5 3 327 8 1,019 751 232 136 85 43 25 40 2,331 24 1,695 1,226 430 315 200 93 82 89 4,130
Nevada - - - - - - - - - - - 959 454 72 23 8 4 2 2 1,523 1 122 382 138 50 19 5 4 2 721
New Hampshire - 9 0 - - - - - - 9 0 146 116 30 12 6 4 3 5 323 4 162 192 56 38 33 25 24 93 625
New Jersey - 10 17 5 2 1 0 - 0 35 - 32 42 24 21 17 11 5 7 160 3 17 93 60 48 38 12 4 7 279
New Mexico - - - - - - - - - - 1 651 736 249 141 78 39 19 23 1,936 9 186 432 404 395 298 192 134 249 2,289
New York 75 7 44 20 17 10 4 2 2 106 65 291 1,044 340 167 94 48 29 30 2,043 - - 720 72 - - - - - 792
North Carolina 3 221 156 25 10 5 3 1 1 421 25 298 792 264 107 48 23 12 13 1,556 18 119 1,188 556 379 253 78 67 91 2,731
North Dakota - - - - - - - - - - - 1,262 1,094 318 144 64 24 13 21 2,941 5 827 1,143 290 123 60 29 23 30 2,526
Ohio 0 131 124 41 20 9 2 2 1 330 5 504 664 189 76 40 20 10 11 1,513 11 653 1,304 368 173 87 25 10 31 2,650
Oklahoma - 0 1 - 0 0 0 0 0 2 10 409 967 394 208 115 63 40 44 2,239 22 506 1,168 424 289 150 84 27 25 2,673
Oregon - - - - - - - - - - 4 582 1,328 421 181 76 34 20 11 2,652 13 66 954 719 275 141 43 26 - 2,224
Pennsylvania - 132 131 32 20 13 8 4 3 344 - 327 724 246 130 73 36 23 35 1,593 15 302 1,528 1,232 622 366 187 136 214 4,587
Rhode Island - 4 2 1 2 1 0 0 0 11 - 5 11 15 18 17 12 8 12 97 0 7 8 13 9 13 9 7 6 72
South Carolina - 9 25 6 3 1 0 0 - 45 0 207 687 305 172 88 42 23 21 1,546 16 301 1,159 719 415 218 99 47 23 2,982
South Dakota - 94 120 37 23 11 3 1 1 291 - 322 1,114 565 286 156 77 43 30 2,592 19 427 1,188 571 352 214 111 56 44 2,962
Tennessee - 10 5 0 - - - - - 14 64 794 660 145 68 31 14 6 3 1,721 20 - 0 - - - - - - 0
Texas 4 48 52 16 4 2 1 0 0 124 63 2,484 3,520 1,350 569 247 99 43 33 8,345 83 - 38 107 190 123 69 24 6 558
Utah - 0 3 4 1 1 0 - - 9 12 170 513 240 122 62 25 9 10 1,150 2 143 420 272 219 133 63 33 29 1,312
Vermont - - 1 1 - - - - - 2 1 110 126 37 21 15 6 5 8 329 5 143 334 113 65 35 17 13 13 734
Virginia 0 19 59 8 3 1 1 0 0 92 22 261 834 298 127 59 22 10 5 1,616 13 186 1,688 1,012 380 135 50 15 4 3,469
Washington - 139 295 88 32 18 14 10 16 612 - 194 636 262 114 53 24 15 16 1,313 13 174 634 421 285 208 119 67 112 2,021
West Virginia - - 0 0 - 0 - - 0 0 1 102 446 214 117 67 32 20 18 1,015 4 10 495 391 193 103 63 49 42 1,346
Wisconsin - 48 48 57 27 14 6 2 1 203 0 759 887 515 325 163 88 59 80 2,876 13 1,248 1,136 696 557 320 293 171 310 4,732
Wyoming - - - - - - - - - - 6 692 842 268 106 40 15 8 7 1,977 3 328 551 196 89 32 13 11 8 1,227
U.S. Total 115 2,533 2,549 723 335 170 84 42 39 6,474 1,150 25,688 36,415 13,049 6,439 3,391 1,610 924 1,100 88,616 1,072 17,635 43,819 21,271 13,117 8,022 3,908 2,341 2,881 112,993
Puerto Rico - - - - - - - - - - 41 - - 0 1 1 1 1 2 6 - - - - - - - - - -
Grand Total 115 2,533 2,549 723 335 170 84 42 39 6,474 1,191 25,688 36,415 13,049 6,439 3,391 1,611 925 1,102 88,622 1,072 17,635 43,819 21,271 13,117 8,022 3,908 2,341 2,881 112,993

August 23, 2018
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 4 246 82 34 26 18 12 7 4 429
Alaska 1 14 40 13 7 2 1 0 1 78
Arizona 3 152 60 21 10 3 2 1 0 249
Arkansas - 105 105 43 20 16 8 6 8 310
California 2 243 412 213 147 99 59 43 53 1,268
Colorado - 57 123 54 38 16 8 5 3 304
Connecticut - 154 102 32 16 7 3 2 1 317
Delaware 1 3 19 9 3 2 2 1 1 40
Dist. of Columbia 0 - 1 - 4 - 2 - 4 12
Florida 78 382 234 45 23 10 4 1 1 700
Georgia - 334 236 72 33 18 8 5 4 710
Hawaii - 1 13 11 10 9 6 3 3 55
Idaho 0 44 36 6 3 1 1 0 0 91
Illinois - 335 395 93 53 32 16 9 7 942
Indiana 66 187 104 56 31 21 12 7 7 425
Iowa 6 57 66 21 10 6 4 3 2 170
Kansas 1 117 63 24 15 10 3 1 1 234
Kentucky 4 107 67 18 11 9 3 1 2 217
Louisiana 10 103 87 51 50 50 25 17 13 395
Maine 0 50 23 7 5 1 0 0 0 87
Maryland 0 141 120 27 15 11 6 5 12 338
Massachusetts 2 321 122 24 12 12 6 4 10 510
Michigan 3 173 269 86 58 41 23 17 15 682
Minnesota 0 86 140 47 21 16 7 4 4 325
Mississippi - 146 48 22 15 11 5 3 3 253
Missouri - 308 137 41 24 15 7 4 2 538
Montana 1 41 41 7 3 3 1 1 1 97
Nebraska 1 22 28 9 4 3 1 1 1 68
Nevada - 75 39 17 13 8 2 1 1 155
New Hampshire - 65 14 3 1 0 - 0 0 83
New Jersey - 134 133 41 25 15 11 11 16 387
New Mexico 0 97 41 9 3 2 1 0 0 153
New York 9 225 374 127 65 44 33 23 40 931
North Carolina 0 304 252 80 42 20 12 6 4 721
North Dakota - 22 26 7 4 1 1 0 0 61
Ohio 1 384 319 95 54 37 19 10 12 930
Oklahoma 3 89 109 34 19 14 8 5 6 283
Oregon - 75 107 25 12 8 4 2 1 234
Pennsylvania - 241 299 93 64 37 20 11 10 775
Rhode Island 0 19 24 5 2 1 1 0 0 52
South Carolina - 85 118 39 27 16 10 5 4 304
South Dakota - 16 49 14 5 2 1 0 0 88
Tennessee 3 382 100 36 17 10 4 2 2 554
Texas 16 428 543 216 135 72 27 13 7 1,442
Utah 0 70 112 38 18 10 3 2 1 253
Vermont - 46 12 3 2 1 0 0 0 64
Virginia 13 152 223 68 33 20 7 4 2 508
Washington - 113 124 43 22 11 7 6 8 335
West Virginia - 102 85 20 14 7 3 2 1 235
Wisconsin - 104 107 59 46 24 12 7 5 364
Wyoming - 36 35 17 8 4 3 1 2 106
U.S. Total 232 7,192 6,417 2,174 1,295 806 428 263 287 18,861
Puerto Rico 24 2 44 44 35 27 18 14 48 233
Grand Total 256 7,194 6,461 2,218 1,330 833 446 277 335 19,094

August 23, 2018
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 5 2 2 1 0 0 26 27 397 495 150 79 51 34 19 47 1,273
Alaska - - - - - - - - - - 5 13 35 28 19 12 9 7 11 134
Arizona 5 90 76 23 12 5 2 1 1 210 221 90 139 107 95 72 51 36 34 623
Arkansas 0 7 39 20 13 7 7 5 3 101 20 41 179 121 82 58 35 27 64 606
California 8 251 504 292 193 117 72 45 67 1,542 309 127 542 702 854 872 729 658 1,970 6,453
Colorado - 51 145 52 33 21 10 6 6 324 0 63 228 188 170 134 86 65 134 1,068
Connecticut - 83 105 27 16 8 3 2 1 244 - 19 143 148 124 98 61 40 78 712
Delaware - 7 21 6 3 1 0 0 0 39 3 27 91 35 19 13 8 6 14 212
Dist. of Columbia 0 - 2 - 6 - 4 - 4 16 1 - 0 - 9 - 24 - 73 105
Florida 72 165 247 46 23 12 5 4 3 503 133 986 1,641 557 283 163 82 52 77 3,842
Georgia 1 45 72 23 18 10 5 2 2 176 10 464 1,002 371 198 111 66 46 109 2,367
Hawaii - 0 4 6 6 5 4 3 4 34 2 22 43 39 41 35 25 16 43 264
Idaho 1 11 10 2 1 1 1 0 0 28 94 56 111 53 35 26 16 12 28 337
Illinois - 10 42 27 13 14 7 2 2 117 0 135 689 555 442 350 230 183 304 2,888
Indiana 16 60 45 25 15 9 5 3 3 165 81 247 417 245 192 153 99 78 168 1,598
Iowa - - - - - - - - - - 80 84 188 154 119 90 52 40 100 828
Kansas 0 74 66 22 11 9 4 2 2 191 9 68 102 46 33 24 13 10 15 310
Kentucky 6 34 17 7 5 3 2 1 0 69 41 154 194 82 53 41 27 16 38 605
Louisiana 0 7 12 5 9 15 9 7 8 72 120 69 203 148 124 106 77 72 154 953
Maine - 3 7 2 2 2 1 1 1 18 2 10 43 30 21 11 9 7 15 146
Maryland 0 90 134 37 18 13 6 4 8 311 7 156 275 129 98 83 58 51 153 1,003
Massachusetts 2 148 103 27 14 8 8 3 11 322 37 47 245 277 282 271 207 174 440 1,944
Michigan 0 84 157 56 25 15 7 6 6 355 3 145 460 387 325 273 206 171 396 2,362
Minnesota 2 52 98 35 15 9 5 3 2 219 1 146 224 97 55 35 21 12 25 616
Mississippi - 14 30 8 5 3 2 1 1 64 1 124 273 156 109 81 52 39 117 950
Missouri 3 186 176 58 30 21 9 5 5 491 2 137 273 133 97 73 50 35 69 867
Montana - - - - - - - - - - 5 24 61 41 31 24 17 15 38 252
Nebraska 7 16 45 17 11 9 7 6 13 124 57 13 45 30 30 29 25 22 76 269
Nevada - 22 9 7 8 4 2 0 0 53 6 117 93 48 38 26 18 9 19 368
New Hampshire - 56 14 2 1 1 0 0 0 74 0 57 66 29 18 13 10 7 23 224
New Jersey - 133 177 58 29 18 15 8 15 453 1 123 340 228 215 200 154 140 401 1,801
New Mexico - 1 5 5 0 0 0 - - 12 4 90 163 108 94 77 47 34 68 681
New York 79 41 214 134 97 79 57 44 70 737 144 87 654 473 358 292 207 185 753 3,009
North Carolina 1 175 182 63 31 18 7 4 5 486 78 152 646 405 265 158 100 61 128 1,915
North Dakota - - - - - - - - - - 1 24 58 35 28 19 13 9 23 209
Ohio 1 175 235 71 37 27 13 10 11 578 21 207 596 386 314 248 163 130 382 2,425
Oklahoma 1 40 81 34 23 13 6 4 3 204 14 70 208 174 176 142 108 85 195 1,158
Oregon 4 23 22 7 3 2 1 1 1 59 20 85 258 155 118 82 51 32 55 836
Pennsylvania - 94 229 102 59 43 18 10 9 565 - 176 629 486 435 324 222 177 349 2,798
Rhode Island 1 14 30 16 10 4 3 1 2 80 6 7 21 28 44 48 39 39 112 337
South Carolina 0 16 37 13 7 5 2 1 2 84 - 51 337 247 172 117 58 33 49 1,064
South Dakota - 1 7 4 3 1 1 0 0 18 - 6 30 24 25 17 14 12 10 137
Tennessee 1 74 51 20 13 6 3 3 2 172 76 517 650 244 153 93 60 40 77 1,834
Texas 118 193 508 265 163 95 37 15 10 1,286 419 625 1,477 919 696 543 385 318 769 5,731
Utah - 19 20 6 3 1 0 0 0 49 7 108 246 119 75 43 24 15 20 649
Vermont 0 3 8 2 1 1 0 0 0 16 3 15 42 22 15 10 5 5 10 123
Virginia 3 79 178 50 22 13 6 2 1 352 23 54 367 277 219 164 105 69 75 1,330
Washington 0 113 187 50 28 14 8 7 15 421 24 50 250 227 195 155 110 99 332 1,419
West Virginia 0 0 3 3 2 2 1 2 1 14 3 21 163 81 51 31 16 15 19 396
Wisconsin - 56 82 82 59 30 12 5 12 340 0 90 247 287 317 262 189 149 401 1,942
Wyoming - 1 0 1 0 0 0 - 0 3 4 35 70 33 22 16 12 9 21 218
U.S. Total 336 2,826 4,444 1,822 1,101 699 381 230 313 11,816 2,127 6,629 15,951 10,045 8,059 6,368 4,479 3,578 9,081 64,189
Puerto Rico 55 - - 0 0 0 0 - 1 1 318 - 2 5 8 11 10 9 32 77
Grand Total 390 2,826 4,444 1,822 1,101 699 382 230 314 11,817 2,445 6,629 15,953 10,049 8,067 6,380 4,489 3,586 9,112 64,266

(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) Includes unpaved miles and bridges.

(3) Estimated from sample data.

 

 

Page last modified on November 27, 2018
Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000