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FHWA Home / Policy & Governmental Affairs / Highway Policy Information / Table HM-47 - Highway Statistics 2016

Highway Statistics 2016


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NATIONAL HIGHWAY SYSTEM LENGTH - 2016
  MILES BY MEASURED PAVEMENT ROUGHNESS - RURAL

September 18, 2017
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 8 383 124 27 18 7 3 1 1 563 6 958 765 137 57 29 14 9 9 1,978
Alaska 6 208 333 155 116 77 46 29 31 996 274 84 167 74 68 73 58 54 135 714
Arizona 1 506 264 81 35 16 6 3 4 916 35 401 455 164 81 39 16 9 8 1,173
Arkansas 0 146 181 57 25 14 7 4 5 439 3 116 727 452 276 171 95 58 64 1,959
California 3 437 392 155 92 49 24 13 21 1,183 80 813 1,507 548 281 153 77 48 71 3,497
Colorado - 150 251 121 53 31 22 14 6 648 - 398 1,091 536 275 143 65 37 30 2,576
Connecticut - 16 7 3 1 0 0 0 0 29 - 20 63 33 18 8 3 3 2 150
Delaware - - - - - - - - - - 0 40 85 18 5 2 1 0 0 152
Dist. of Columbia - - - - - - - - - - - - - - - - - - - -
Florida 11 438 233 21 9 3 1 1 0 706 70 976 1,303 276 80 27 7 4 3 2,677
Georgia 17 234 194 51 20 11 4 3 2 518 246 756 1,465 403 157 57 24 9 15 2,886
Hawaii - - - - - - - - - - - 0 18 15 15 15 6 5 5 80
Idaho 0 235 204 46 17 9 3 2 3 519 12 379 865 266 110 49 20 13 13 1,716
Illinois - 691 468 71 10 1 - 2 - 1,243 - 341 1,076 447 236 140 47 14 5 2,306
Indiana 108 411 147 41 25 18 9 6 7 664 9 622 519 178 89 44 21 12 16 1,500
Iowa 28 246 218 66 35 10 4 2 4 584 129 818 1,016 554 360 223 121 92 97 3,281
Kansas 1 439 162 29 6 2 0 0 0 639 23 1,730 1,012 168 55 22 9 6 7 3,008
Kentucky 0 482 110 16 8 3 2 0 0 622 41 791 632 143 62 30 11 6 6 1,679
Louisiana 6 183 142 85 67 32 11 4 2 526 15 157 479 204 120 76 45 22 24 1,129
Maine - 184 64 29 - 0 0 0 - 278 - 74 367 157 114 31 23 9 6 781
Maryland - 64 63 8 4 1 1 1 0 142 0 185 132 29 13 9 4 3 3 377
Massachusetts 1 29 32 5 1 1 0 0 2 71 0 21 48 32 18 10 6 4 7 145
Michigan 6 223 219 59 31 18 6 3 2 561 12 1,061 944 243 109 57 26 11 20 2,472
Minnesota 29 200 252 57 27 13 7 3 2 560 136 1,218 1,071 485 273 153 72 43 38 3,353
Mississippi - 338 128 33 24 15 7 5 5 554 - 472 732 268 157 90 46 25 24 1,812
Missouri - 497 269 44 18 8 4 1 1 842 1 996 1,363 373 144 62 29 13 8 2,988
Montana - 405 556 86 27 13 5 1 2 1,094 - 659 1,339 405 179 88 38 25 39 2,773
Nebraska 5 263 107 25 9 3 2 1 1 409 1,021 738 555 190 95 55 28 19 21 1,701
Nevada - 398 29 7 5 6 2 1 0 448 4 927 475 65 18 9 11 11 18 1,534
New Hampshire - 121 19 2 0 - - - - 142 - 175 135 33 16 10 7 4 7 388
New Jersey - 19 21 2 1 1 0 0 0 45 - 34 61 31 25 20 11 6 7 195
New Mexico 6 555 203 48 16 8 4 3 4 841 4 701 646 200 109 57 24 15 17 1,768
New York 17 268 338 92 40 21 11 7 9 786 188 285 1,041 372 190 106 52 31 29 2,105
North Carolina 14 300 169 34 19 9 3 1 1 537 64 513 1,039 328 145 62 29 13 20 2,149
North Dakota - 282 188 30 8 1 1 0 0 510 1 1,301 1,064 318 150 54 23 14 19 2,943
Ohio 0 322 221 53 24 10 5 2 3 642 3 541 812 253 118 50 25 13 14 1,824
Oklahoma 7 283 242 57 25 17 7 5 3 640 37 369 954 389 208 124 67 37 47 2,195
Oregon - 244 177 52 15 4 2 1 1 495 1 582 1,328 421 182 77 34 20 11 2,656
Pennsylvania - 419 478 107 32 22 9 4 4 1,075 0 461 832 271 142 84 40 25 42 1,896
Rhode Island - 15 2 0 0 0 - - - 18 - 7 14 16 19 18 11 9 13 108
South Carolina - 202 236 57 30 13 5 2 1 546 - 139 638 349 209 120 58 37 41 1,591
South Dakota 21 205 284 50 18 7 3 2 0 570 230 320 1,112 627 294 156 71 42 38 2,660
Tennessee - 529 73 16 10 4 1 1 0 634 16 765 663 163 74 47 16 9 13 1,749
Texas - 911 776 190 71 32 11 5 4 2,001 14 2,178 3,146 1,267 584 264 94 48 37 7,617
Utah 1 388 239 41 10 4 1 1 0 683 9 187 746 403 258 147 67 34 27 1,869
Vermont 2 190 53 7 2 1 0 0 - 254 0 66 137 46 23 14 7 6 7 306
Virginia 0 235 278 53 21 7 2 0 1 598 28 234 890 334 147 58 24 10 6 1,702
Washington - 182 133 47 29 14 11 7 8 429 0 324 925 367 149 68 40 23 30 1,927
West Virginia 12 128 138 21 10 5 2 1 1 306 6 104 447 216 117 59 29 18 23 1,013
Wisconsin 7 200 159 62 38 27 10 6 4 506 23 761 960 589 352 192 102 62 116 3,135
Wyoming - 477 220 56 31 14 4 3 2 808 38 590 850 287 125 53 22 10 8 1,946
U.S. Total 314 14,283 9,796 2,458 1,134 579 270 150 148 28,819 2,782 26,386 38,705 14,142 7,101 3,706 1,778 1,052 1,268 94,139
Puerto Rico (3) - - 1 10 4 11 5 4 7 42 - - 1 3 13 2 - - - 19
Grand Total 314 14,283 9,797 2,468 1,138 590 275 154 155 28,860 2,782 26,386 38,707 14,145 7,114 3,708 1,778 1,052 1,268 94,159

NATIONAL HIGHWAY SYSTEM LENGTH - 2016
  MILES BY MEASURED PAVEMENT ROUGHNESS - RURAL

September 18, 2017
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 14 1,341 888 164 74 36 17 9 10 2,540
Alaska 280 292 499 229 185 151 105 84 166 1,709
Arizona 36 907 719 245 115 55 23 12 12 2,088
Arkansas 3 262 908 509 302 185 101 62 69 2,397
California 83 1,250 1,899 703 373 202 101 62 91 4,679
Colorado - 548 1,342 657 329 174 88 51 36 3,225
Connecticut - 36 70 36 19 9 3 3 2 178
Delaware 0 40 85 18 5 2 1 0 0 152
Dist. of Columbia - - - - - - - - - -
Florida 81 1,414 1,536 297 89 30 8 4 4 3,383
Georgia 264 990 1,659 453 177 68 28 11 17 3,404
Hawaii - 0 18 15 15 15 6 5 5 80
Idaho 12 614 1,069 312 127 58 23 15 16 2,235
Illinois - 1,031 1,544 519 247 141 47 16 5 3,550
Indiana 117 1,033 665 218 114 62 30 18 23 2,164
Iowa 157 1,064 1,234 620 395 232 125 95 101 3,866
Kansas 24 2,169 1,174 197 61 24 9 6 7 3,647
Kentucky 41 1,273 742 159 70 33 13 6 6 2,301
Louisiana 21 340 621 289 188 109 56 26 26 1,655
Maine - 258 431 186 114 31 23 10 6 1,059
Maryland 0 249 195 37 17 10 5 4 3 519
Massachusetts 1 51 80 37 19 11 6 4 8 216
Michigan 17 1,284 1,163 302 141 75 32 15 22 3,033
Minnesota 165 1,417 1,323 542 300 165 79 47 39 3,912
Mississippi - 809 860 301 180 105 53 29 29 2,367
Missouri 1 1,493 1,632 417 162 70 33 14 9 3,830
Montana - 1,064 1,895 492 206 100 43 27 42 3,867
Nebraska 1,026 1,001 662 215 104 57 29 20 22 2,110
Nevada 4 1,325 503 72 23 15 13 12 18 1,982
New Hampshire - 296 153 36 17 10 7 4 7 530
New Jersey - 52 82 33 27 21 11 6 8 240
New Mexico 10 1,256 849 247 125 65 28 18 21 2,609
New York 205 553 1,378 464 230 128 63 38 38 2,891
North Carolina 78 813 1,208 362 164 71 32 14 21 2,685
North Dakota 1 1,583 1,252 348 158 55 24 14 19 3,453
Ohio 3 863 1,033 306 142 61 30 15 17 2,467
Oklahoma 44 653 1,196 446 233 141 74 42 51 2,835
Oregon 1 826 1,505 473 197 81 36 21 12 3,151
Pennsylvania 0 880 1,310 377 174 106 49 28 47 2,971
Rhode Island - 22 16 17 20 18 11 9 13 126
South Carolina - 340 874 406 239 133 64 39 42 2,137
South Dakota 251 525 1,397 677 312 163 74 44 38 3,231
Tennessee 16 1,295 735 179 84 51 17 10 13 2,383
Texas 14 3,089 3,922 1,457 655 295 105 53 42 9,618
Utah 10 575 985 444 268 150 68 35 28 2,553
Vermont 3 256 190 52 26 15 8 6 7 559
Virginia 29 469 1,168 387 168 65 26 10 6 2,300
Washington 0 507 1,057 414 178 82 50 30 38 2,356
West Virginia 17 232 585 238 127 65 31 19 23 1,319
Wisconsin 29 961 1,118 651 390 219 112 68 121 3,640
Wyoming 38 1,067 1,070 344 156 67 26 13 10 2,754
U.S. Total 3,096 40,669 48,502 16,601 8,236 4,285 2,048 1,202 1,417 122,958
Puerto Rico (3) - - 3 13 17 13 5 4 7 61
Grand Total 3,096 40,669 48,504 16,613 8,252 4,298 2,053 1,206 1,424 123,019

NATIONAL HIGHWAY SYSTEM LENGTH - 2016
  MILES BY MEASURED PAVEMENT ROUGHNESS - URBAN

September 18, 2017
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 9 248 84 33 25 15 10 6 3 424 11 449 475 144 80 52 32 23 37 1,293
Alaska 1 20 37 12 4 3 1 1 1 78 2 15 49 29 21 14 10 7 14 159
Arizona 0 149 67 23 8 3 2 0 0 252 180 150 196 97 70 45 27 18 36 638
Arkansas 0 71 110 54 28 17 11 10 10 310 6 22 146 130 101 79 54 42 103 676
California 2 243 411 212 145 98 58 43 52 1,262 128 374 1,047 992 1,042 993 805 707 2,058 8,019
Colorado - 62 123 55 38 13 6 4 3 304 1 74 341 250 212 162 106 81 155 1,380
Connecticut - 151 103 32 16 8 4 2 2 317 0 112 249 172 137 100 62 43 71 946
Delaware - 3 20 9 3 2 2 1 1 41 1 29 102 39 20 14 8 6 13 231
Dist. of Columbia 1 - 0 1 2 2 1 1 4 11 2 - 2 3 6 8 9 13 79 120
Florida 14 355 305 56 28 13 5 2 1 764 109 1,057 1,934 669 335 194 93 58 91 4,432
Georgia 29 331 224 60 29 19 9 5 5 682 696 481 933 305 158 95 48 34 58 2,113
Hawaii - 0 13 10 11 8 6 3 3 55 0 20 52 47 49 43 31 20 53 315
Idaho - 33 38 12 5 3 1 0 0 92 15 53 109 59 38 28 20 13 33 354
Illinois - 237 486 121 50 40 4 1 2 942 - 164 769 720 563 371 256 195 322 3,361
Indiana 96 138 111 59 35 22 12 9 10 397 122 276 407 198 139 101 67 49 91 1,328
Iowa 10 54 67 20 11 7 4 3 3 169 91 71 168 157 124 92 57 53 112 834
Kansas 9 108 67 26 14 7 2 1 1 226 20 163 164 59 38 27 16 11 18 495
Kentucky 0 135 54 15 8 4 3 1 1 220 66 189 215 94 62 44 23 17 29 673
Louisiana 2 103 96 52 50 50 26 15 11 403 77 88 235 164 144 123 94 75 148 1,072
Maine - 37 37 8 1 2 3 0 - 88 - 5 44 45 20 22 10 16 19 181
Maryland 0 140 116 26 19 14 8 7 8 338 7 247 388 161 116 101 66 55 157 1,292
Massachusetts 8 307 128 19 13 10 6 5 12 501 62 148 305 297 286 280 213 176 474 2,179
Michigan 5 179 263 90 56 40 23 17 12 680 35 218 605 445 355 289 210 176 404 2,702
Minnesota 235 28 38 8 6 4 3 1 3 90 398 129 156 63 38 27 14 8 16 450
Mississippi - 130 57 25 14 12 6 4 5 253 - 139 291 159 111 88 58 42 127 1,014
Missouri - 290 154 43 22 16 7 4 3 538 11 268 496 201 139 100 58 40 67 1,369
Montana - 36 48 7 3 2 1 1 0 98 - 23 66 39 26 19 11 9 22 217
Nebraska 4 20 26 9 5 2 1 1 0 64 157 27 75 43 39 41 30 28 73 356
Nevada - 70 43 17 10 5 2 1 1 150 0 146 111 61 39 26 14 8 15 420
New Hampshire - 63 15 3 1 1 0 0 0 83 0 98 88 39 25 18 12 11 28 319
New Jersey 1 118 147 44 25 14 11 10 18 386 2 238 512 291 258 235 180 159 469 2,342
New Mexico 2 104 32 8 4 2 1 0 0 152 6 88 153 92 80 60 40 29 57 599
New York 28 170 392 135 69 45 31 23 43 908 326 125 853 607 479 384 292 250 716 3,704
North Carolina 38 271 252 86 40 19 6 5 4 683 103 252 750 418 250 141 79 48 141 2,079
North Dakota - 23 29 6 2 1 0 0 0 61 2 27 54 31 28 19 11 8 24 202
Ohio 0 356 344 94 56 41 18 11 11 931 130 391 878 465 372 272 177 145 376 3,076
Oklahoma 1 78 116 38 19 14 8 6 7 285 33 89 227 150 118 103 80 70 116 953
Oregon - 75 107 25 12 8 4 2 1 234 2 109 283 165 119 83 57 37 68 921
Pennsylvania 7 215 335 99 61 31 16 11 10 779 6 262 852 598 480 373 245 190 393 3,393
Rhode Island - 19 22 5 2 2 1 0 0 52 11 15 47 45 54 54 44 42 112 413
South Carolina - 92 110 41 29 20 6 3 4 304 - 62 327 270 198 139 72 37 56 1,161
South Dakota 13 11 43 11 6 3 1 1 - 75 11 7 36 21 16 13 9 5 7 116
Tennessee 0 370 105 34 17 11 5 2 4 548 62 564 661 252 167 120 61 60 119 2,006
Texas 1 371 485 244 158 97 44 20 14 1,434 181 677 1,803 1,161 878 687 438 327 812 6,782
Utah 0 89 96 37 16 10 4 1 0 253 18 110 293 150 86 50 26 16 19 750
Vermont 2 33 22 4 2 1 0 0 0 63 5 11 33 16 11 8 5 4 9 97
Virginia 14 141 231 74 31 17 7 4 3 508 23 107 542 339 257 188 119 84 93 1,729
Washington - 116 119 42 23 14 7 7 7 335 0 161 428 298 222 176 118 111 353 1,867
West Virginia 6 101 84 19 12 8 3 1 2 230 8 24 163 77 50 31 22 16 22 406
Wisconsin 7 107 102 63 40 24 13 6 3 357 40 108 313 320 294 236 154 118 341 1,885
Wyoming - 36 35 17 8 4 3 1 2 106 6 30 70 34 24 15 11 8 22 214
U.S. Total 544 6,637 6,547 2,240 1,293 830 415 263 289 18,515 3,173 8,693 19,494 11,684 8,979 6,982 4,749 3,803 9,248 73,632
Puerto Rico (3) 2 - 30 74 47 44 28 8 6 238 2 - 2 7 11 33 21 11 25 109
Grand Total 545 6,637 6,577 2,315 1,341 874 444 271 295 18,753 3,175 8,693 19,496 11,692 8,989 7,015 4,770 3,815 9,272 73,741

NATIONAL HIGHWAY SYSTEM LENGTH - 2016
  MILES BY MEASURED PAVEMENT ROUGHNESS - URBAN

September 18, 2017
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 20 698 559 178 105 67 42 29 40 1,717
Alaska 3 34 85 41 26 17 11 7 15 237
Arizona 180 298 262 120 79 48 29 19 36 890
Arkansas 6 93 255 183 128 96 65 52 113 986
California 131 618 1,458 1,204 1,187 1,092 863 750 2,110 9,281
Colorado 1 135 464 305 250 174 112 85 158 1,684
Connecticut 0 263 352 204 153 107 65 45 73 1,264
Delaware 1 32 122 48 23 16 10 7 15 272
Dist. of Columbia 3 - 2 4 7 11 9 14 83 131
Florida 123 1,412 2,239 725 363 207 99 60 92 5,196
Georgia 726 812 1,156 366 188 115 56 39 63 2,795
Hawaii 0 20 65 57 60 51 37 23 56 369
Idaho 15 86 147 71 43 31 22 14 33 447
Illinois - 401 1,255 842 613 411 260 196 324 4,302
Indiana 217 413 518 257 174 124 79 59 101 1,725
Iowa 101 124 235 177 136 99 61 56 115 1,002
Kansas 29 271 230 85 52 34 18 11 19 720
Kentucky 66 324 269 109 70 48 26 19 30 893
Louisiana 79 191 331 216 194 174 120 90 159 1,476
Maine - 42 81 53 21 24 13 16 19 269
Maryland 7 388 504 187 135 115 74 62 165 1,630
Massachusetts 69 456 433 316 299 290 219 181 485 2,680
Michigan 40 397 868 534 411 329 233 193 417 3,381
Minnesota 633 156 194 71 43 31 17 9 19 541
Mississippi - 268 348 184 126 100 64 46 132 1,267
Missouri 11 558 649 244 161 115 65 44 70 1,907
Montana - 59 114 46 30 22 12 10 22 315
Nebraska 161 47 100 52 44 43 31 29 73 420
Nevada 0 216 154 78 49 31 16 10 16 570
New Hampshire 0 161 103 42 26 19 12 11 28 402
New Jersey 2 356 659 334 283 249 191 169 487 2,728
New Mexico 8 192 185 100 84 62 40 29 57 751
New York 354 295 1,245 742 548 429 323 273 758 4,613
North Carolina 142 522 1,001 504 290 160 86 53 144 2,762
North Dakota 2 50 83 37 31 19 11 8 24 264
Ohio 130 748 1,221 560 429 312 195 156 386 4,007
Oklahoma 34 167 343 187 138 117 88 76 123 1,238
Oregon 2 184 390 191 131 91 60 39 69 1,155
Pennsylvania 13 477 1,187 697 542 404 262 202 404 4,172
Rhode Island 11 35 69 50 57 55 45 43 113 465
South Carolina - 154 437 311 227 159 78 40 59 1,465
South Dakota 24 18 80 32 22 16 10 6 7 190
Tennessee 62 934 766 286 184 131 66 63 123 2,553
Texas 182 1,048 2,288 1,404 1,036 784 482 347 826 8,216
Utah 18 199 390 186 102 60 30 17 20 1,003
Vermont 7 44 55 20 13 9 5 4 9 159
Virginia 36 248 773 413 288 205 125 88 95 2,237
Washington 0 277 547 340 245 190 124 118 360 2,202
West Virginia 14 126 247 96 63 39 25 17 23 636
Wisconsin 47 215 415 383 334 260 167 124 344 2,242
Wyoming 6 66 105 51 32 19 14 10 23 319
U.S. Total 3,716 15,329 26,041 13,925 10,272 7,812 5,164 4,067 9,537 92,146
Puerto Rico (3) 4 - 32 82 58 77 49 19 31 347
Grand Total 3,720 15,329 26,073 14,006 10,330 7,888 5,213 4,086 9,567 92,493

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