Table 1-4: Road Condition: 2011

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(Miles)

  International Roughness Index (IRI) Present Serviceability Rating (PSR)
State Not Reported <60 60-94 95-170 171-220 >220 >3.9 3.5-3.9 2.6-3.4 2.1-2.5 <=2.0
Alabama 47 9,349 5,892 5,749 1,033 921 0 0 0 0 0
Alaska 288 249 997 1,454 444 407 0 0 0 0 0
Arizona 1,488 1,827 2,529 2,336 817 329 1,306 528 674 208 159
Arkansas 137 815 4,084 8,206 2,698 1,121 0 135 1,737 1,371 1,463
California 3,138 819 6,682 15,889 8,037 7,014 1,786 1,314 5,590 2,274 1,181
Colorado 233 664 4,075 8,386 1,889 1,272 67 20 0 0 0
Connecticut 0 70 660 2,467 1,423 1,518 0 0 0 0 0
Delaware 8 33 634 544 164 142 0 0 0 0 0
District of Columbia 8 0 1 13 27 403 0 0 0 0 0
Florida 496 4,418 9,181 5,600 1,230 1,129 1,376 772 1,580 164 306
Georgia 4,440 2,328 3,773 961 26 7 769 4,506 11,984 849 1,333
Hawaii 9 89 230 607 226 360 0 0 0 0 0
Idaho 324 2,464 1,206 423 39 25 1,936 967 1,790 546 1,274
Illinois 171 1,718 9,594 15,960 3,854 4,108 0 0 0 0 0
Indiana 185 3,705 5,919 7,753 2,791 2,246 0 0 0 0 0
Iowa 4,209 648 1,564 2,557 685 781 0 0 0 0 0
Kansas 42 2,043 7,656 4,699 783 817 156 2,031 32 5,773 10,707
Kentucky 611 1,551 4,073 5,343 630 308 0 0 0 0 0
Louisiana 87 356 4,634 5,415 1,759 1,040 0 1 6 3 6
Maine 0 261 1,193 2,966 1,006 891 0 0 0 0 0
Maryland 263 774 1,949 2,800 811 758 0 0 0 0 0
Massachusetts 520 375 692 1,749 747 658 0 0 6,302 0 0
Michigan 155 3,485 3,518 2,820 686 806 3,454 2,018 9,558 4,889 5,049
Minnesota 539 4,666 7,923 11,404 2,529 1,792 0 0 0 0 0
Mississippi 293 1,213 4,615 9,049 5,188 1,166 0 0 0 0 0
Missouri 281 2,200 3,798 3,813 460 205 0 0 0 0 0
Montana 0 1,676 5,379 4,543 484 402 0 0 0 0 0
Nebraska 116 2,551 3,420 4,201 642 157 1,463 872 1,449 449 409
Nevada 2,296 323 831 1,290 88 77 0 0 0 0 3
New Hampshire 0 446 1,006 1,100 472 381 0 1 3 0 1
New Jersey 159 260 723 2,643 1,794 2,548 532 334 1,035 97 19
New Mexico 124 1,627 2,661 3,070 1,304 1,184 0 0 0 0 0
New York 43 885 7,048 12,160 3,043 4,044 0 34 79 1 0
North Carolina 548 1,385 7,957 8,026 1,224 787 620 221 232 34 26
North Dakota 2 3,436 5,692 4,147 533 294 0 0 0 0 0
Ohio 10 1,499 8,300 7,071 920 602 2,295 1,331 2,705 1,471 2,782
Oklahoma 6 2,614 5,284 11,970 3,883 6,112 0 0 12 0 1,187
Oregon 1,453 930 3,645 4,019 473 165 13 19 69 1 0
Pennsylvania 560 1,595 4,556 8,730 2,758 2,691 0 0 0 0 0
Rhode Island 16 24 79 415 232 148 157 195 297 114 71
South Carolina 258 1,196 5,432 12,139 1,526 662 0 0 0 0 0
South Dakota 241 1,575 4,347 3,805 792 419 1,166 12 5,469 5 1,455
Tennessee 292 3,906 5,397 4,019 410 249 587 798 1,141 414 242
Texas 425 4,142 18,000 38,370 6,290 2,014 0 0 0 0 1
Utah 21 460 1,890 3,455 680 121 5 48 1,773 154 25
Vermont 12 429 682 912 294 321 0 0 0 0 0
Virginia 76 496 4,966 9,576 2,075 1,376 558 523 1,068 164 132
Washington 67 750 3,728 9,205 3,232 2,143 0 154 634 0 8
West Virginia 16 197 2,093 4,638 1,244 2,215 0 0 0 0 0
Wisconsin 80 2,669 7,526 11,574 3,369 2,877 0 0 0 0 0
Wyoming 80 694 3,093 2,684 338 81 0 0 0 0 0
United States, total 24,875 81,203 210,274 303,749 78,258 62,290 18,247 16,835 55,220 18,980 27,838
U.S. total (incl. Puerto Rico) 24,906 81,203 210,310 304,316 78,993 63,363 18,467 17,068 55,718 19,034 27,838

NOTES: Data may not sum to totals. Road condition ratings are reported using the International Roughness Index (IRI) and the Present Serviceability Rating (PSR). States are required to report to the Federal Highway Administration (FHWA) IRI data for the Interstates, other principal arterials, rural minor arterials, and the National Highway System regardless of functional system. The IRI is also recommended by FHWA for measuring all other functional classifications because the IRI uses a more standardized and objective measurement methodology. Some States elect to report PSR for some sections of rural major collectors, urban minor arterials, and urban collectors. Pavement rating data are not reported for local or rural minor collector functional systems.

According to the pavement condition criteria used in the Highway Performance Monitoring System, an IRI rating less than 95 or a PSR rating greater than or equal to 3.5 indicates "good" ride quality. An IRI rating of less than or equal to 170 or a PSR rating for greater than or equal to 2.5 indicates "acceptable" ride quality. For further information, refer to the U.S. Department of Tansportation, Federal Highway Administration, 2010 Status of the Nation's Highways, Bridges, and Transit: Conditions and Performance Report, Exhibit 3-1, available at www.fhwa.dot.gov/policy/2010cpr as of June 2013.

SOURCE: U.S. Department of Transportation, Federal Highway Administration, Highway Statistics, HM-63 and HM-64, available at www.fhwa.dot.gov/policyinformation/statistics.cfm as of June 2013.