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FHWA Home / Policy & Governmental Affairs / Highway Policy Information / Table HM-63 - Highway Statistics 2015

Highway Statistics 2015


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Functional System Length - 2015 (1)
    Miles by Measured Pavement Roughness / Present Serviceability Rating

October 2015
Table HM-63
Sheet 1 of 3

STATE RURAL MAJOR COLLECTOR
INTERNATIONAL ROUGHNESS INDEX (2) PRESENT SERVICEABILITY RATING (3) TOTAL
<60 60-94 95-170 171-220 >220 TOTAL >3.9 3.5-3.9 2.6-3.4 2.1-2.5 <=2.0 TOTAL
Alabama 711 1,730 604 31 7 3,082 - - - - - - 3,082
Alaska 135 306 235 83 94 853 - - - - - - 853
Arizona 543 1,090 1,401 264 147 3,445 - - - - - - 3,445
Arkansas 98 1,904 4,801 1,821 971 9,595 - - 845 79 364 1,287 10,883
California 1,156 1,094 1,824 1,992 5,750 11,816 - - - - - - 11,816
Colorado 81 1,008 2,081 366 253 3,789 530 - - 151 - 681 4,470
Connecticut - 45 412 176 224 857 - - - - - - 857
Delaware 49 172 174 22 18 435 - - - - - - 435
Dist. of Columbia - - - - - - - - - - - - -
Florida 342 1,360 1,042 130 73 2,946 192 444 336 101 - 1,074 4,020
Georgia 396 1,383 681 28 11 2,499 - - - - - - 2,499
Hawaii 0 9 112 48 51 220 - - - - - - 220
Idaho 71 436 217 17 4 746 546 513 1,759 598 440 3,855 4,601
Illinois 83 4,800 4,392 293 87 9,656 - - - - - - 9,656
Indiana 1,214 2,293 2,070 484 162 6,223 - - - - - - 6,223
Iowa 313 799 1,312 335 346 3,105 - - - - - - 3,105
Kansas 989 2,363 1,185 88 23 4,647 337 1,869 4,122 1,024 496 7,848 12,495
Kentucky 79 817 1,707 175 55 2,833 - - - - - - 2,833
Louisiana 322 1,542 1,672 531 628 4,695 - - - - - - 4,695
Maine 138 1,016 1,268 436 424 3,281 - - - - - - 3,281
Maryland 94 415 624 129 64 1,326 - - - - - - 1,326
Massachusetts - 67 95 40 41 243 - - 586 - 28 613 856
Michigan 1,344 1,552 1,078 53 15 4,043 2,576 - 4,507 - 3,336 10,419 14,462
Minnesota 2,829 4,524 5,134 1,023 1,088 14,597 - - - - - - 14,597
Mississippi 241 1,917 5,529 2,187 1,773 11,647 - - - - - - 11,647
Missouri 188 2,990 8,299 3,437 1,413 16,327 - - - - - - 16,327
Montana 429 1,353 2,432 441 213 4,868 - - - - - - 4,868
Nebraska 1,066 919 760 128 61 2,935 1,130 827 894 278 206 3,334 6,269
Nevada 160 529 1,088 200 77 2,054 - - - - - - 2,054
New Hampshire 50 67 63 21 30 231 - 14 794 - - 808 1,039
New Jersey - 20 414 31 - 465 53 129 119 5 - 307 772
New Mexico 235 464 1,807 937 949 4,391 - - 18 - 56 74 4,466
New York 150 1,886 2,636 478 327 5,477 - - - - - - 5,477
North Carolina 180 2,731 3,217 619 361 7,109 - - - - - - 7,109
North Dakota 1,099 2,761 2,501 481 412 7,254 - - 198 - - 198 7,452
Ohio 1,882 4,920 3,433 463 304 11,001 16 - 2 - 10 28 11,029
Oklahoma 280 4,249 9,488 2,247 2,912 19,176 - - - - - - 19,176
Oregon 63 244 1,151 373 199 2,030 1,413 1,652 1,603 403 207 5,278 7,309
Pennsylvania 202 1,600 2,965 1,202 1,403 7,372 - - - - - - 7,372
Rhode Island 3 8 72 39 51 172 - - - - - - 172
South Carolina 754 2,578 5,425 1,077 187 10,022 - - - - - - 10,022
South Dakota 346 1,094 2,235 606 159 4,440 38 299 2,086 634 227 3,284 7,724
Tennessee 499 1,367 2,293 374 65 4,597 - - - - - - 4,597
Texas 5 78 309 56 57 506 1,999 2,320 7,716 2,205 1,872 16,113 16,619
Utah 24 241 729 188 65 1,246 72 32 31 - - 134 1,381
Vermont 69 397 749 316 320 1,852 - - - - - - 1,852
Virginia 40 977 3,664 1,241 1,018 6,940 - - - - - - 6,940
Washington 20 976 4,743 1,420 850 8,008 - - - - - - 8,008
West Virginia 0 286 1,551 197 173 2,207 111 35 567 109 304 1,126 3,333
Wisconsin 856 2,137 4,653 1,149 1,076 9,870 - - - - - - 9,870
Wyoming 272 1,170 936 189 148 2,715 13 - - - 4 16 2,731
U.S. Total 20,102 68,682 107,260 28,662 25,138 249,845 9,027 8,134 26,181 5,587 7,548 56,478 306,323
Puerto Rico (4) - - 10 75 119 203 4 3 22 - - 30 233
Grand Total 20,102 68,682 107,270 28,737 25,257 250,048 9,032 8,137 26,204 5,587 7,548 56,508 306,556

October 2015
Table HM-63
Sheet 2 of 3

STATE URBAN MINOR ARTERIAL
INTERNATIONAL ROUGHNESS INDEX (2) PRESENT SERVICEABILITY RATING (3) TOTAL
<60 60-94 95-170 171-220 >220 TOTAL >3.9 3.5-3.9 2.6-3.4 2.1-2.5 <=2.0 TOTAL
Alabama 205 337 206 21 13 783 - - - 0 - 0 783
Alaska 21 62 74 20 21 198 - - - - - - 198
Arizona 45 252 710 217 192 1,415 - - - - - - 1,415
Arkansas 42 207 441 85 65 841 5 20 322 270 84 701 1,541
California 206 546 3,483 1,848 5,056 11,138 - - - - - - 11,138
Colorado 10 105 765 470 315 1,665 87 10 4 35 0 137 1,802
Connecticut 0 86 569 291 727 1,673 - - - - - - 1,673
Delaware 16 55 72 28 25 196 - - - - - - 196
Dist. of Columbia 2 - - 2 159 164 - - - - - - 164
Florida 322 1,164 1,311 270 192 3,259 169 323 322 103 11 927 4,187
Georgia 264 654 457 70 66 1,510 - - - - - - 1,510
Hawaii 5 27 86 33 40 192 - - - - - - 192
Idaho 6 15 24 5 2 52 209 147 159 83 20 617 669
Illinois 80 508 2,075 1,044 739 4,446 - - - - - - 4,446
Indiana 297 362 262 35 25 980 - - - - - - 980
Iowa 6 34 137 83 189 450 - - - - - - 450
Kansas 51 227 594 222 234 1,327 - - - - - - 1,327
Kentucky 68 224 434 107 56 889 - - - - - - 889
Louisiana 47 316 680 294 400 1,736 - - 0 - - 0 1,737
Maine 7 68 97 32 31 236 - - - - - - 236
Maryland 32 202 697 245 254 1,431 - - - - - - 1,431
Massachusetts 5 122 639 301 245 1,313 26 - 2,579 - 32 2,638 3,951
Michigan 36 196 258 100 73 663 1,179 - 1,802 - 1,140 4,121 4,784
Minnesota 261 568 954 489 325 2,597 - - - - - - 2,597
Mississippi 40 174 420 181 265 1,080 - - - - - - 1,080
Missouri 29 287 944 341 356 1,957 - - - - - - 1,957
Montana 11 52 120 44 59 287 - - - - - - 287
Nebraska 4 8 28 9 14 63 233 89 231 57 32 641 704
Nevada 123 266 339 81 65 874 - - - - - - 874
New Hampshire 27 70 96 24 35 253 - 10 227 - - 237 490
New Jersey 84 126 708 621 746 2,284 291 240 721 102 14 1,367 3,651
New Mexico 26 127 289 101 128 671 - - 3 0 1 4 675
New York 69 1,048 2,526 844 968 5,454 - 2 - - - 2 5,456
North Carolina 33 849 1,750 399 250 3,281 28 11 4 - - 43 3,324
North Dakota 12 30 119 38 45 243 - - 26 - - 26 269
Ohio 155 889 1,578 573 674 3,869 5 48 25 4 22 105 3,974
Oklahoma - 105 939 484 522 2,050 - 12 89 37 - 138 2,188
Oregon 30 65 122 31 18 266 359 287 336 30 9 1,020 1,286
Pennsylvania 82 564 1,617 891 823 3,976 - - - - - - 3,976
Rhode Island - 18 126 95 104 343 - - - - - - 343
South Carolina 42 220 1,141 291 74 1,767 - - - - - - 1,767
South Dakota 4 31 149 115 105 405 - 3 11 2 1 17 422
Tennessee 236 359 377 104 72 1,148 - - - - - - 1,148
Texas 30 137 197 57 130 551 1,057 988 3,033 687 637 6,403 6,953
Utah 5 43 59 10 6 124 2 15 - - - 17 140
Vermont 7 52 62 15 12 147 - - - - - - 147
Virginia 5 320 1,354 470 317 2,466 - - - - - - 2,466
Washington 35 299 1,103 490 613 2,540 - - - - - - 2,540
West Virginia 1 95 201 44 34 374 61 33 33 19 18 165 539
Wisconsin 15 129 714 462 818 2,139 - - - - - - 2,139
Wyoming 11 42 69 22 28 173 35 5 5 1 7 53 226
U.S. Total 3,148 12,741 32,173 13,152 16,725 77,939 3,747 2,242 9,933 1,431 2,028 19,381 97,320
Puerto Rico (4) 0 0 105 271 398 773 77 70 73 14 - 233 1,006
Grand Total 3,148 12,741 32,278 13,423 17,123 78,713 3,823 2,311 10,006 1,445 2,028 19,614 98,326

October 2015
Table HM-63
Sheet 3 of 3

STATE URBAN MAJOR AND MINOR COLLECTOR
INTERNATIONAL ROUGHNESS INDEX (2) PRESENT SERVICEABILITY RATING (3) TOTAL
<60 60-94 95-170 171-220 >220 TOTAL >3.9 3.5-3.9 2.6-3.4 2.1-2.5 <=2.0 TOTAL
Alabama 7 38 21 5 1 72 - - - 7 - 7 80
Alaska 24 66 115 44 63 312 - - - - - - 312
Arizona 17 77 402 186 252 933 - - - - - - 933
Arkansas 0 34 126 59 38 257 - 44 623 310 192 1,170 1,427
California 162 435 3,872 2,556 6,384 13,409 - - - - - - 13,409
Colorado 3 118 633 437 400 1,591 171 36 64 23 6 301 1,892
Connecticut 0 25 394 378 1,327 2,123 0 - - - - 0 2,123
Delaware 17 97 163 62 66 406 - - - - - - 406
Dist. of Columbia - - 1 - 155 155 - - - - - - 155
Florida 106 948 2,020 590 453 4,117 904 1,126 1,448 462 216 4,156 8,273
Georgia 9 90 49 16 13 178 - - - - - - 178
Hawaii 2 13 155 111 170 450 - - - - - - 450
Idaho 0 2 4 1 1 7 231 120 235 98 36 720 727
Illinois 74 508 1,809 1,275 1,632 5,299 - - - - - - 5,299
Indiana 69 117 79 16 5 286 - - - - - - 286
Iowa 2 35 125 53 142 357 - - - - - - 357
Kansas 36 124 677 338 564 1,739 5 5 26 - 2 37 1,776
Kentucky 11 66 278 87 53 494 - - - - - - 494
Louisiana 28 263 741 334 526 1,890 - 1 2 - 10 13 1,903
Maine 6 117 219 78 117 537 - - - - - - 537
Maryland 20 174 826 392 387 1,800 - - - - - - 1,800
Massachusetts - 2 6 - 8 15 57 - 2,811 - 137 3,004 3,019
Michigan 3 9 8 6 4 31 655 - 1,634 - 1,171 3,461 3,491
Minnesota 106 489 888 319 454 2,257 - - - - - - 2,257
Mississippi 4 99 474 300 666 1,542 - - - - - - 1,542
Missouri - 119 852 426 619 2,016 - - - - - - 2,016
Montana 9 28 212 51 137 437 - - - - - - 437
Nebraska - 0 3 1 4 8 131 32 191 125 28 507 515
Nevada 36 177 446 217 188 1,064 - - - - - - 1,064
New Hampshire 0 5 11 2 3 20 - 0 515 - - 516 536
New Jersey - 31 319 577 955 1,881 177 168 935 135 33 1,448 3,329
New Mexico 42 146 319 139 225 871 4 24 34 19 11 91 962
New York 24 438 1,942 1,250 1,583 5,239 - - - 1 - 1 5,239
North Carolina 24 704 1,917 439 377 3,461 74 22 36 3 1 136 3,597
North Dakota 25 8 81 66 107 288 - - 10 - - 10 298
Ohio 92 952 2,306 825 1,127 5,302 75 99 251 72 163 660 5,962
Oklahoma 9 15 385 252 670 1,330 9 23 183 20 6 241 1,572
Oregon 4 32 21 7 24 87 557 835 921 120 70 2,504 2,590
Pennsylvania 16 221 2,068 1,257 1,852 5,414 - - - - - - 5,414
Rhode Island - 10 154 131 263 557 - - 8 - - 8 565
South Carolina 24 232 1,295 805 524 2,879 - - - - - - 2,879
South Dakota 0 5 79 79 125 288 0 2 44 2 - 49 337
Tennessee 49 55 68 10 57 239 - - - - - - 239
Texas 5 69 311 98 273 758 1,522 2,495 5,652 1,804 1,844 13,317 14,075
Utah 1 9 39 21 5 75 - - 11 - - 11 85
Vermont 2 49 90 39 49 229 - - - - - - 229
Virginia 0 144 1,009 518 395 2,065 - - - - - - 2,065
Washington 6 72 580 576 1,109 2,343 - - - - - - 2,343
West Virginia - 7 31 13 11 62 41 74 160 115 84 473 535
Wisconsin 15 127 534 513 905 2,094 - - - - - - 2,094
Wyoming 10 68 87 56 48 269 179 34 9 8 19 248 517
U.S. Total 1,101 7,667 29,242 16,010 25,514 79,534 4,791 5,140 15,804 3,325 4,027 33,088 112,622
Puerto Rico (4) - - 45 128 286 459 139 160 403 40 - 743 1,202
Grand Total 1,101 7,667 29,288 16,139 25,800 79,993 4,930 5,300 16,207 3,366 4,027 33,831 113,824

(1) Some States elect to report International Roughness Index (IRI) for these systems; some report IRI for some sections and PSR for some sections. PSR is ignored for sections coded with both IRI and PSR. Some differences from other tables may be noted because these are estimated from sample data. Excludes unpaved mileage. Includes structures.

(2) Data are reported as the 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.

(3) The "Present Serviceability Rating" (PSR) is a subjective, primarily ride-based system adapted from the "AASHO ROAD TESTS" conducted in the late 1950's and early 1960's. Reference: Highway Special Report 61E, 1962. The PSR values range from 0.1 to 5.0; higher PSR values represent smoother riding roadways.

(4) 2009 data used.

 

Page last modified on April 1, 2019
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