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Highway Statistics Series

Highway Statistics 1998


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NATIONAL HIGHWAY SYSTEM LENGTH – 1998

PAVED MILES BY MEASURED PAVEMENT ROUGHNESS – RURAL

OCTOBER 1999
TABLE HM-47
SHEET 1 OF 2

STATE INTERNATIONAL ROUGHNESS INDEX (IRI) 1/
INTERSTATE SYSTEM OTHER
NOT REPORTED < 60 60-94 95-119 120-144 145-170 171-194 195-220 > 220 TOTAL REPORTED NOT REPORTED < 60 60-94 95-119 120-144 145-170 171-194 195-220 > 220 TOTAL REPORTED
Alabama 0 94 348 95 43 21 0 0 0 601 0 154 1,107 592 140 40 10 2 7 2,052
Alaska 0 12 238 337 326 30 69 13 5 1,030 455 6 95 107 196 20 36 30 1 491
Arizona 0 363 518 76 24 2 12 1 1 997 0 131 361 318 161 82 47 16 22 1,138
Arkansas 0 0 56 38 50 83 51 49 66 393 22 9 608 572 311 182 74 37 13 1,806
California 0 7 608 298 240 124 40 13 27 1,357 0 24 1,020 1,076 852 432 87 47 2 3,540
Colorado 0 9 187 154 177 137 38 56 11 769 0 6 229 459 415 257 96 150 223 1,835
Connecticut 0 1 66 15 13 4 1 0 2 102 0 3 58 84 61 30 11 4 3 254
Delaware 0 0 0 0 0 0 0 0 0 0 0 4 78 85 21 2 3 3 1 197
Dist. of Columbia 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Florida 45 703 70 45 75 16 0 0 0 909 33 890 651 122 47 29 2 6 5 1,752
Georgia 0 620 175 12 0 0 0 0 0 807 11 2,065 387 32 1 2 0 0 0 2,487
Hawaii 6 0 0 0 0 0 0 0 0 0 139 0 0 0 0 0 0 0 0 0
Idaho 0 168 257 83 10 0 7 0 1 526 0 276 647 461 200 65 9 4 3 1,665
Illinois 1,518 0 0 0 0 0 0 0 0 0 1,860 0 0 0 0 0 0 0 0 0
Indiana 0 292 393 76 34 58 0 0 0 853 4 163 489 269 199 114 35 1 1 1,271
Iowa 0 61 323 203 41 6 1 0 0 635 61 216 781 350 202 221 126 14 18 1,928
Kansas 0 254 303 50 69 15 7 0 0 698 61 622 1,306 390 153 76 19 15 3 2,584
Kentucky 0 131 215 33 102 54 0 0 0 535 0 252 1,023 192 144 111 8 0 0 1,730
Louisiana 37 0 140 145 91 142 27 6 23 574 22 13 371 235 184 156 108 64 37 1,168
Maine 41 38 206 26 2 0 0 0 0 272 7 101 398 170 64 25 9 7 7 781
Maryland 0 12 164 45 6 1 1 0 0 229 0 49 330 117 30 18 9 3 3 559
Massachusetts 0 3 86 65 6 0 0 0 1 161 13 0 97 121 41 32 10 10 2 313
Michigan 0 35 257 172 130 82 42 20 4 742 7 287 853 497 330 200 65 41 29 2,302
Minnesota 0 47 299 165 85 30 35 10 10 681 0 436 847 570 375 149 96 41 63 2,577
Mississippi 0 12 212 152 69 83 23 1 5 557 0 15 562 456 382 180 36 36 21 1,688
Missouri 0 7 230 260 213 79 16 1 0 806 1 57 491 790 684 377 125 23 22 2,569
Montana 0 275 576 154 76 43 5 5 0 1,134 0 259 1,355 530 226 140 63 24 9 2,606
Nebraska 0 95 139 57 63 57 25 0 0 436 0 419 732 353 318 155 152 90 44 2,263
Nevada 0 228 145 42 24 12 21 4 4 480 0 165 626 195 338 87 23 0 2 1,436
New Hampshire 0 51 95 24 6 0 0 0 0 176 0 64 234 85 30 20 12 7 5 457
New Jersey 6 0 32 34 18 6 12 8 3 113 94 0 43 89 106 76 41 36 61 452
New Mexico 0 204 364 217 56 27 16 7 1 892 0 78 553 422 314 169 68 57 81 1,742
New York 0 0 521 151 79 26 10 2 7 796 6 2 1,024 351 169 150 113 64 93 1,966
North Carolina 0 28 161 109 109 144 63 21 1 636 44 19 823 473 412 261 84 31 26 2,129
North Dakota 0 73 314 105 38 0 0 0 0 530 0 195 1,048 589 169 37 42 7 2 2,089
Ohio 0 328 427 55 19 1 0 0 0 830 0 351 1,173 179 85 33 10 2 3 1,836
Oklahoma 0 81 351 147 105 14 22 1 1 722 0 45 942 528 292 186 76 24 17 2,110
Oregon 0 0 4 39 151 165 103 77 41 580 4 0 517 1,110 769 163 46 30 47 2,682
Pennsylvania 0 42 713 297 101 41 6 0 1 1,201 1 106 849 592 368 212 81 39 17 2,264
Rhode Island 0 0 18 4 0 0 0 0 0 22 0 0 26 21 12 6 1 1 0 67
South Carolina 0 271 289 91 21 0 0 0 0 672 0 76 509 334 192 95 26 22 19 1,273
South Dakota 23 0 199 175 83 112 33 3 0 605 95 17 406 459 526 345 200 87 57 2,097
Tennessee 637 20 62 4 12 0 0 0 0 98 1,317 19 117 19 12 7 0 0 0 174
Texas 0 303 1,411 351 99 49 2 0 1 2,216 0 691 2,880 1,925 645 179 47 19 25 6,411
Utah 0 239 318 117 49 31 13 3 0 770 0 88 536 224 114 41 5 2 2 1,012
Vermont 0 100 146 19 13 3 0 0 0 281 0 13 69 55 75 53 23 11 19 318
Virginia 0 7 356 284 56 9 4 0 0 716 0 6 545 490 234 117 52 23 22 1,489
Washington 0 211 218 51 19 0 2 0 0 501 11 344 1,259 343 81 31 5 4 2 2,069
West Virginia 0 78 214 69 56 33 3 2 0 455 0 153 424 257 157 62 13 5 8 1,079
Wisconsin 0 46 199 145 135 42 8 1 0 576 0 130 716 607 475 310 170 118 114 2,640
Wyoming 0 252 369 134 52 19 0 0 0 826 0 575 1,185 140 38 16 4 0 0 1,958
U.S. Total 2,313 5,801 12,992 5,420 3,246 1,801 718 304 216 30,498 4,268 9,594 31,380 18,435 11,350 5,751 2,378 1,257 1,161 81,306
Puerto Rico 0 0 5 24 51 15 5 0 3 103 22 0 0 2 1 16 5 0 0 24
Grand Total 2,313 5,801 12,997 5,444 3,297 1,816 723 304 219 30,601 4,290 9,594 31,380 18,437 11,351 5,767 2,383 1,257 1,161 81,330

OCTOBER 1999
SHEET 2 OF 4
TABLE HM-47

STATE INTERNATIONAL ROUGHNESS INDEX (IRI) 1/
TOTAL RURAL NHS
NOT REPORTED < 60 60-94 95-119 120-144 145-170 171-194 195-220 > 220 TOTAL REPORTED
Alabama 0 248 1,455 687 183 61 10 2 7 2,653
Alaska 455 18 333 444 522 50 105 43 6 1,521
Arizona 0 494 879 394 185 84 59 17 23 2,135
Arkansas 22 9 664 610 361 265 125 86 79 2,199
California 0 31 1,628 1,374 1,092 556 127 60 29 4,897
Colorado 0 15 416 613 592 394 134 206 234 2,604
Connecticut 0 4 124 99 74 34 12 4 5 356
Delaware 0 4 78 85 21 2 3 3 1 197
Dist. of Columbia 0 0 0 0 0 0 0 0 0 0
Florida 78 1,593 721 167 122 45 2 6 5 2,661
Georgia 11 2,685 562 44 1 2 0 0 0 3,294
Hawaii 145 0 0 0 0 0 0 0 0 0
Idaho 0 444 904 544 210 65 16 4 4 2,191
Illinois 3,378 0 0 0 0 0 0 0 0 0
Indiana 4 455 882 345 233 172 35 1 1 2,124
Iowa 61 277 1,104 553 243 227 127 14 18 2,563
Kansas 61 876 1,609 440 222 91 26 15 3 3,282
Kentucky 0 383 1,238 225 246 165 8 0 0 2,265
Louisiana 59 13 511 380 275 298 135 70 60 1,742
Maine 48 139 604 196 66 25 9 7 7 1,053
Maryland 0 61 494 162 36 19 10 3 3 788
Massachusetts 13 3 183 186 47 32 10 10 3 474
Michigan 7 322 1,110 669 460 282 107 61 33 3,044
Minnesota 0 483 1,146 735 460 179 131 51 73 3,258
Mississippi 0 27 774 608 451 263 59 37 26 2,245
Missouri 1 64 721 1,050 897 456 141 24 22 3,375
Montana 0 534 1,931 684 302 183 68 29 9 3,740
Nebraska 0 514 871 410 381 212 177 90 44 2,699
Nevada 0 393 771 237 362 99 44 4 6 1,916
New Hampshire 0 115 329 109 36 20 12 7 5 633
New Jersey 100 0 75 123 124 82 53 44 64 565
New Mexico 0 282 917 639 370 196 84 64 82 2,634
New York 6 2 1,545 502 248 176 123 66 100 2,762
North Carolina 44 47 984 582 521 405 147 52 27 2,765
North Dakota 0 268 1,362 694 207 37 42 7 2 2,619
Ohio 0 679 1,600 234 104 34 10 2 3 2,666
Oklahoma 0 126 1,293 675 397 200 98 25 18 2,832
Oregon 4 0 521 1,149 920 328 149 107 88 3,262
Pennsylvania 1 148 1,562 889 469 253 87 39 18 3,465
Rhode Island 0 0 44 25 12 6 1 1 0 89
South Carolina 0 347 798 425 213 95 26 22 19 1,945
South Dakota 118 17 605 634 609 457 233 90 57 2,702
Tennessee 1,954 39 179 23 24 7 0 0 0 272
Texas 0 994 4,291 2,276 744 228 49 19 26 8,627
Utah 0 327 854 341 163 72 18 5 2 1,782
Vermont 0 113 215 74 88 56 23 11 19 599
Virginia 0 13 901 774 290 126 56 23 22 2,205
Washington 11 555 1,477 394 100 31 7 4 2 2,570
West Virginia 0 231 638 326 213 95 16 7 8 1,534
Wisconsin 0 176 915 752 610 352 178 119 114 3,216
Wyoming 0 827 1,554 274 90 35 4 0 0 2,784
U.S. Total 6,581 15,395 44,372 23,855 14,596 7,552 3,096 1,561 1,377 111,804
Puerto Rico 22 0 5 26 52 31 10 0 3 127
Grand Total 6,603 15,395 44,377 23,881 14,648 7,583 3,106 1,561 1,380 111,931

OCTOBER 1999
SHEET 3 OF 4
TABLE HM-47

STATE INTERNATIONAL ROUGHNESS INDEX (IRI) 1/
INTERSTATE SYSTEM OTHER
NOT REPORTED < 60 60-94 95-119 120-144 145-170 171-194 195-220 > 220 TOTAL REPORTED NOT REPORTED < 60 60-94 95-119 120-144 145-170 171-194 195-220 > 220 TOTAL REPORTED
Alabama 0 23 127 70 44 35 5 0 0 304 16 70 313 199 66 23 4 3 3 681
Alaska 0 0 22 24 5 2 0 0 0 53 0 0 9 34 15 8 5 1 0 72
Arizona 0 34 85 24 26 1 2 0 0 172 0 51 112 75 60 30 20 7 11 366
Arkansas 1 2 14 34 28 24 17 15 13 147 21 1 64 48 28 46 16 14 21 238
California 0 24 146 201 285 231 103 62 18 1,070 0 32 234 261 438 277 113 56 42 1,453
Colorado 0 2 51 36 44 34 7 1 8 183 0 3 64 153 119 105 31 64 38 577
Connecticut 0 1 85 78 40 22 10 5 4 245 1 0 62 90 78 59 40 17 17 363
Delaware 0 0 7 11 8 3 6 3 3 41 0 3 25 24 7 2 1 1 2 65
Dist. of Columbia 0 0 1 2 4 1 1 2 2 13 4 1 0 0 5 4 3 7 62 82
Florida 41 271 114 40 29 23 0 0 0 477 98 346 415 84 74 13 7 6 4 949
Georgia 0 351 80 3 2 0 0 0 0 436 25 550 200 26 17 0 0 0 0 793
Hawaii 49 0 0 0 0 0 0 0 0 0 106 0 0 0 0 0 0 0 0 0
Idaho 0 17 36 8 12 11 0 1 0 85 8 7 22 16 18 9 8 3 5 88
Illinois 647 0 0 0 0 0 0 0 0 0 1,669 0 0 0 0 0 0 0 0 0
Indiana 0 63 150 61 16 15 10 3 0 318 17 15 78 74 62 47 43 14 24 357
Iowa 0 0 50 32 34 10 19 2 0 147 52 7 77 67 45 48 15 5 26 290
Kansas 3 20 69 66 12 4 0 0 0 171 60 25 67 33 30 15 8 2 4 184
Kentucky 0 44 91 29 29 24 2 1 6 226 0 15 170 100 32 44 14 11 2 388
Louisiana 23 0 11 73 33 80 43 4 15 259 80 6 68 50 57 56 60 44 86 427
Maine 10 6 27 7 1 1 0 0 0 42 19 2 48 25 13 12 5 4 6 115
Maryland 0 5 109 66 32 16 11 8 6 253 0 12 107 91 51 45 28 25 41 400
Massachusetts 2 0 187 135 49 27 1 2 1 402 342 0 99 208 143 114 59 47 47 717
Michigan 0 15 129 131 95 56 41 18 15 500 14 10 98 161 159 188 148 118 278 1,160
Minnesota 0 21 113 51 31 10 4 2 0 232 0 49 143 98 82 34 26 11 19 462
Mississippi 0 1 13 28 58 19 3 5 1 128 0 2 75 47 57 37 15 11 17 261
Missouri 0 1 51 128 102 61 16 7 5 371 23 0 40 112 149 120 71 59 44 595
Montana 0 4 29 16 6 2 0 1 0 58 0 0 11 17 15 7 4 4 5 63
Nebraska 0 2 18 7 9 4 4 1 0 45 12 4 17 22 40 30 42 20 58 233
Nevada 0 14 33 13 15 10 1 0 0 86 0 8 59 24 12 7 3 3 3 119
New Hampshire 0 14 26 7 0 0 1 0 0 48 0 9 59 18 11 11 2 2 2 114
New Jersey 17 0 26 72 35 44 46 17 44 284 214 0 84 171 216 183 76 77 67 874
New Mexico 0 21 25 30 13 6 9 3 1 108 9 3 27 59 35 21 9 7 9 170
New York 4 0 258 131 79 66 57 32 76 699 38 6 319 286 236 196 120 115 360 1,638
North Carolina 0 1 128 64 73 31 19 26 11 353 12 1 135 85 87 70 43 15 22 458
North Dakota 0 14 17 9 0 0 0 0 0 40 0 4 22 10 7 10 5 1 3 62
Ohio 0 195 392 105 31 15 4 1 0 743 0 67 342 208 141 69 36 23 32 918
Oklahoma 0 3 61 43 32 30 19 11 9 208 0 0 73 64 53 43 23 13 7 276
Oregon 0 0 0 6 15 33 29 26 37 146 0 0 21 97 106 69 22 15 71 401
Pennsylvania 3 7 247 156 85 33 13 4 2 547 4 15 241 281 290 268 157 95 95 1,442
Rhode Island 0 0 15 13 11 6 1 0 0 46 2 0 47 34 26 7 4 2 1 121
South Carolina 0 39 79 24 11 1 2 1 0 157 0 18 162 119 69 55 20 14 19 476
South Dakota 3 0 4 8 9 20 6 0 0 47 34 0 3 3 7 7 2 0 7 29
Tennessee 237 4 57 17 11 8 3 1 1 102 531 8 52 18 9 5 1 2 3 98
Texas 0 30 346 309 241 72 18 1 1 1,018 0 140 752 793 709 443 422 87 102 3,448
Utah 0 31 46 36 27 13 12 2 0 167 0 30 79 53 24 20 7 5 6 224
Vermont 0 9 29 2 0 0 0 0 0 40 0 0 8 12 11 7 5 3 9 55
Virginia 0 2 94 162 95 29 6 12 1 401 0 0 145 233 186 110 55 58 58 845
Washington 0 65 108 29 24 27 5 4 0 262 124 41 201 73 48 25 13 6 12 419
West Virginia 0 21 43 13 9 5 3 0 1 95 0 14 43 25 16 10 5 2 2 117
Wisconsin 0 5 23 35 45 41 11 5 4 169 0 1 71 88 123 140 93 75 161 752
Wyoming 0 7 37 19 17 6 1 0 0 87 0 24 40 5 4 2 0 2 1 78
U.S. Total 1,040 1,389 3,909 2,664 1,912 1,212 571 289 285 12,231 3,535 1,600 5,603 4,874 4,286 3,151 1,909 1,176 1,914 24,513
Puerto Rico 2 0 5 35 39 25 16 8 17 145 5 0 1 21 8 28 11 7 10 86
Grand Total 1,042 1,389 3,914 2,699 1,951 1,237 587 297 302 12,376 3,540 1,600 5,604 4,895 4,294 3,179 1,920 1,183 1,924 24,599

OCTOBER 1999
SHEET 4 of 4
TABLE HM-47

STATE INTERNATIONAL ROUGHNESS INDEX (IRI) 1/
TOTAL URBAN NHS
NOT REPORTED < 60 60-94 95-119 120-144 145-170 171-194 195-220 > 220 TOTAL REPORTED
Alabama 16 93 440 269 110 58 9 3 3 985
Alaska 0 0 31 58 20 10 5 1 0 125
Arizona 0 85 197 99 86 31 22 7 11 538
Arkansas 22 3 78 82 56 70 33 29 34 385
California 0 56 380 462 723 508 216 118 60 2,523
Colorado 0 5 115 189 163 139 38 65 46 760
Connecticut 1 1 147 168 118 81 50 22 21 608
Delaware 0 3 32 35 15 5 7 4 5 106
Dist. of Columbia 4 1 1 2 9 5 4 9 64 95
Florida 139 617 529 124 103 36 7 6 4 1,426
Georgia 25 901 280 29 19 0 0 0 0 1,229
Hawaii 155 0 0 0 0 0 0 0 0 0
Idaho 8 24 58 24 30 20 8 4 5 173
Illinois 2,316 0 0 0 0 0 0 0 0 0
Indiana 17 78 228 135 78 62 53 17 24 675
Iowa 52 7 127 99 79 58 34 7 26 437
Kansas 63 45 136 99 42 19 8 2 4 355
Kentucky 0 59 261 129 61 68 16 12 8 614
Louisiana 103 6 79 123 90 136 103 48 101 686
Maine 29 8 75 32 14 13 5 4 6 157
Maryland 0 17 216 157 83 61 39 33 47 653
Massachusetts 344 0 286 343 192 141 60 49 48 1,119
Michigan 14 25 227 292 254 244 189 136 293 1,660
Minnesota 0 70 256 149 113 44 30 13 19 694
Mississippi 0 3 88 75 115 56 18 16 18 389
Missouri 23 1 91 240 251 181 87 66 49 966
Montana 0 4 40 33 21 9 4 5 5 121
Nebraska 12 6 35 29 49 34 46 21 58 278
Nevada 0 22 92 37 27 17 4 3 3 205
New Hampshire 0 23 85 25 11 11 3 2 2 162
New Jersey 231 0 110 243 251 227 122 94 111 1,158
New Mexico 9 24 52 89 48 27 18 10 10 278
New York 42 6 577 417 315 262 177 147 436 2,337
North Carolina 12 2 263 149 160 101 62 41 33 811
North Dakota 0 18 39 19 7 10 5 1 3 102
Ohio 0 262 734 313 172 84 40 24 32 1,661
Oklahoma 0 3 134 107 85 73 42 24 16 484
Oregon 0 0 21 103 121 102 51 41 108 547
Pennsylvania 7 22 488 437 375 301 170 99 97 1,989
Rhode Island 2 0 62 47 37 13 5 2 1 167
South Carolina 0 57 241 143 80 56 22 15 19 633
South Dakota 37 0 7 11 16 27 8 0 7 76
Tennessee 768 12 109 35 20 13 4 3 4 200
Texas 0 170 1,098 1,102 950 515 440 88 103 4,466
Utah 0 61 125 89 51 33 19 7 6 391
Vermont 0 9 37 14 11 7 5 3 9 95
Virginia 0 2 239 395 281 139 61 70 59 1,246
Washington 124 106 309 102 72 52 18 10 12 681
West Virginia 0 35 86 38 25 15 8 2 3 212
Wisconsin 0 6 94 123 168 181 104 80 165 921
Wyoming 0 31 77 24 21 8 1 2 1 165
U.S. Total 4,575 2,989 9,512 7,538 6,198 4,363 2,480 1,465 2,199 36,744
Puerto Rico 7 0 6 56 47 53 27 15 27 231
Grand Total 4,582 2,989 9,518 7,594 6,245 4,416 2,507 1,480 2,226 36,975

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.