Table 1-26: Condition of U.S. Roadways by Functional System
Table 1-26: Condition of U.S. Roadways by Functional System
| 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| RURAL | |||||||||||||||||||
| Interstates miles reported | 33,547 | 33,677 | 33,027 | 29,089 | 31,502 | 31,254 | 31,312 | 31,431 | 30,498 | 32,820 | 32,888 | 32,951 | 32,907 | 31,956 | 31,341 | 30,802 | 30,512 | 30,040 | 30,076 |
| Poor, percent | 8.7 | 7.6 | 5.2 | 7.0 | 6.5 | 6.3 | 3.9 | 3.6 | 4.1 | 2.4 | 2.1 | 1.9 | 2.1 | 1.6 | 2.0 | 1.7 | 2.0 | 1.9 | 1.9 |
| Mediocre, percentb | NR | NR | 14.1 | 27.7 | 26.5 | 20.7 | 19.1 | 19.1 | 16.5 | 14.0 | 12.2 | 11.7 | 10.2 | 9.8 | 10.4 | 9.5 | 8.0 | 7.9 | 7.7 |
| Fair, percent | 31.9 | 31.7 | 17.4 | 20.9 | 23.9 | 22.3 | 21.7 | 20.7 | 17.8 | 18.1 | 16.9 | 15.4 | 15.5 | 15.4 | 14.5 | 13.6 | 12.8 | 12.5 | 12.1 |
| Good, percentb | NR | NR | 27.6 | 36.1 | 33.2 | 36.9 | 38.8 | 41.0 | 42.6 | 44.0 | 44.8 | 43.3 | 44.0 | 43.9 | 46.9 | 47.0 | 46.5 | 46.8 | 46.9 |
| Very good, percent | 59.5 | 60.7 | 35.6 | 8.3 | 9.9 | 13.9 | 16.6 | 15.7 | 19.0 | 21.5 | 23.9 | 27.7 | 28.2 | 29.3 | 26.2 | 28.2 | 30.7 | 30.9 | 31.4 |
| Unpaved, percent | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | |
| Miles not reporteda | N | N | N | 3,563 | 955 | 1,326 | 1,508 | 1,382 | 2,313 | 153 | 162 | 109 | 84 | 87 | 103 | 92 | 71 | 311 | 117 |
| Other principal arterials miles reported | 83,802 | 85,729 | 94,798 | 78,296 | 89,506 | 89,265 | 92,103 | 92,170 | 93,333 | 97,247 | 97,297 | 97,946 | 97,854 | 96,656 | 95,390 | 94,216 | 94,500 | 94,396 | 94,367 |
| Poor, percent | 3.4 | 3.6 | 3.3 | 2.9 | 2.4 | 4.4 | 1.4 | 1.6 | 1.4 | 0.9 | 0.8 | 0.7 | 0.7 | 0.7 | 0.9 | 0.8 | 0.8 | 0.6 | 0.5 |
| Mediocre, percentb | NR | NR | 5.9 | 9.2 | 8.2 | 7.6 | 5.8 | 4.9 | 4.6 | 3.7 | 3.2 | 3.0 | 2.7 | 2.8 | 3.3 | 2.8 | 2.5 | 2.5 | 2.4 |
| Fair, percent | 42.6 | 44.5 | 34.6 | 54.8 | 57.4 | 51.1 | 49.1 | 47.7 | 43.3 | 41.5 | 38.7 | 37.3 | 35.6 | 35.5 | 35.9 | 33.5 | 31.3 | 30.9 | 30.5 |
| Good, percentb | NR | NR | 28.5 | 26.7 | 26.6 | 27.9 | 34.4 | 37.2 | 38.3 | 40.5 | 42.9 | 42.5 | 44.2 | 44.6 | 44.9 | 45.8 | 46.5 | 46.5 | 47.5 |
| Very good, percent | 53.8 | 51.9 | 27.6 | 6.4 | 5.4 | 9.0 | 9.3 | 8.6 | 12.3 | 13.5 | 14.4 | 16.5 | 16.7 | 16.4 | 14.9 | 17.1 | 18.9 | 19.5 | 19.1 |
| Unpaved, percent | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N |
| Miles not reporteda | N | N | N | 17,905 | 7,489 | 8,683 | 6,028 | 6,083 | 5,524 | 1,587 | 1,619 | 1,247 | 1,009 | 386 | 552 | 946 | 430 | 377 | 579 |
| Minor arterials miles reported | 144,735 | 142,866 | 137,637 | 134,837 | 124,877 | 121,443 | 126,381 | 126,525 | 130,591 | 135,192 | 136,096 | 134,706 | 136,955 | 134,984 | 134,884 | 134,358 | 134,914 | 134,798 | 134,386 |
| Poor, percent | 4.6 | 4.3 | 3.9 | 3.9 | 3.5 | 3.7 | 2.3 | 2.3 | 1.9 | 1.7 | 1.7 | 1.7 | 1.3 | 1.3 | 1.4 | 1.4 | 1.7 | 1.2 | 1.3 |
| Mediocre, percentb | NR | NR | 7.1 | 9.1 | 10.5 | 9.0 | 8.2 | 6.7 | 6.0 | 5.2 | 5.3 | 5.2 | 4.5 | 4.8 | 5.1 | 4.0 | 4.2 | 4.5 | 4.5 |
| Fair, percent | 48.2 | 47.3 | 36.4 | 53.5 | 57.9 | 54.7 | 50.7 | 50.4 | 47.2 | 47.3 | 46.2 | 44.9 | 43.6 | 43.0 | 44.3 | 42.0 | 40.7 | 40.9 | 40.8 |
| Good, percentb | NR | NR | 25.3 | 25.0 | 23.6 | 23.9 | 31.0 | 33.6 | 34.3 | 34.4 | 35.6 | 36.9 | 39.1 | 41.2 | 39.5 | 41.6 | 41.5 | 40.3 | 40.4 |
| Very good, percent | 47.2 | 48.4 | 26.8 | 8.5 | 4.5 | 8.7 | 7.7 | 7.0 | 10.6 | 11.4 | 11.2 | 11.3 | 11.6 | 9.7 | 9.6 | 11.0 | 11.8 | 13.0 | 13.1 |
| Unpaved, percent | Z | Z | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N |
| Miles not reporteda | N | N | N | 12,740 | 13,294 | 15,708 | 10,978 | 10,978 | 6,664 | 1,968 | 1,436 | 2,874 | 606 | 607 | 573 | 1,049 | 455 | 497 | 616 |
| Major collectors miles reported | 436,365 | 436,737 | 434,175 | 432,223 | 431,111 | 431,712 | 432,117 | 386,122 | 388,498 | 389,134 | 388,488 | 389,579 | 389,125 | 383,414 | 379,061 | 378,722 | 378,753 | 378,451 | 380,297 |
| Poor, percent | 8.9 | 7.7 | 7.8 | 6.8 | 6.5 | 6.5 | 6.7 | 7.8 | 7.4 | 9.0 | 8.5 | 7.7 | 7.7 | 7.4 | 6.9 | 6.5 | 6.2 | 5.7 | 5.3 |
| Mediocre, percentb | NR | NR | 11.0 | 12.4 | 11.3 | 11.4 | 10.3 | 12.3 | 11.9 | 12.1 | 12.7 | 12.8 | 11.8 | 11.7 | 11.9 | 12.0 | 11.7 | 12.1 | 12.4 |
| Fair, percent | 43.8 | 45.2 | 32.3 | 37.7 | 33.5 | 30.8 | 34.4 | 37.6 | 39.0 | 44.8 | 43.7 | 43.7 | 43.4 | 44.3 | 46.5 | 46.3 | 47.0 | 48.6 | 48.3 |
| Good, percentb | NR | NR | 17.7 | 16.3 | 16.1 | 17.4 | 20.0 | 23.0 | 23.4 | 20.9 | 22.0 | 23.4 | 24.9 | 25.1 | 23.5 | 24.2 | 23.4 | 23.0 | 22.8 |
| Very good, percent | 36.2 | 36.1 | 20.4 | 15.9 | 21.9 | 23.7 | 18.4 | 19.3 | 18.3 | 13.1 | 13.2 | 12.5 | 12.2 | 11.4 | 11.1 | 11.0 | 11.7 | 10.7 | 11.2 |
| Unpaved, percent | 11.1 | 11.0 | 10.7 | 10.9 | 10.7 | 10.2 | 10.1 | N | N | N | N | N | N | N | N | N | N | N | N |
| Miles not reporteda | N | N | N | N | N | N | N | 2,402 | N | N | N | N | N | N | N | N | N | N | N |
| URBAN | |||||||||||||||||||
| Interstates miles reported | 11,527 | 11,603 | 12,466 | 10,738 | 12,338 | 12,307 | 12,430 | 12,477 | 12,231 | 13,109 | 13,139 | 13,256 | 13,367 | 14,331 | 14,984 | 15,544 | 15,899 | 16,035 | 16,348 |
| Poor, percent | 8.6 | 7.7 | 7.1 | 10.6 | 13.0 | 10.4 | 8.6 | 9.0 | 9.4 | 7.3 | 6.5 | 7.4 | 7.7 | 7.7 | 7.2 | 6.0 | 5.2 | 5.9 | 5.4 |
| Mediocre, percentb | NR | NR | 13.2 | 30.9 | 29.9 | 26.8 | 28.3 | 27.0 | 25.5 | 23.1 | 21.7 | 20.8 | 20.6 | 19.1 | 17.7 | 16.8 | 16.3 | 16.0 | 15.2 |
| Fair, percent | 32.2 | 32.3 | 17.0 | 23.6 | 24.2 | 23.8 | 24.7 | 24.4 | 21.8 | 22.6 | 21.4 | 20.9 | 20.3 | 18.8 | 19.5 | 18.6 | 18.4 | 18.1 | 17.3 |
| Good, percentb | NR | NR | 28.0 | 28.3 | 26.7 | 27.5 | 30.7 | 32.9 | 32.0 | 34.9 | 37.1 | 35.9 | 36.0 | 36.6 | 38.2 | 42.0 | 41.4 | 41.3 | 42.9 |
| Very good, percent | 59.1 | 60.0 | 34.7 | 6.5 | 6.2 | 11.4 | 7.6 | 6.7 | 11.4 | 12.0 | 13.3 | 14.9 | 15.4 | 17.9 | 17.4 | 16.6 | 18.7 | 18.8 | 19.2 |
| Unpaved, percent | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N |
| Miles not reporteda | N | N | N | 2,140 | 788 | 857 | 787 | 771 | 1,040 | 230 | 226 | 156 | 123 | 131 | 140 | 157 | 139 | 271 | 193 |
| Other freeways and expressway miles reported | 7,670 | 7,714 | 8,465 | 7,011 | 7,618 | 7,804 | 8,410 | 8,480 | 8,772 | 8,860 | 8,796 | 8,959 | 9,242 | 9,786 | 10,143 | 10,443 | 10,659 | 10,832 | 11,175 |
| Poor, percent | 2.2 | 2.3 | 2.6 | 3.8 | 5.3 | 4.8 | 3.4 | 3.3 | 3.2 | 2.6 | 2.8 | 3.1 | 2.7 | 2.4 | 2.1 | 1.9 | 1.5 | 1.6 | 1.4 |
| Mediocre, percentb | NR | NR | 5.9 | 9.4 | 12.7 | 9.8 | 8.7 | 8.7 | 8.7 | 8.1 | 8.1 | 7.1 | 7.6 | 8.3 | 7.6 | 6.0 | 5.0 | 5.5 | 5.1 |
| Fair, percent | 43.9 | 44.2 | 32.4 | 60.6 | 58.1 | 54.7 | 54.7 | 58.5 | 54.3 | 53.6 | 50.7 | 50.5 | 48.6 | 45.7 | 45.5 | 44.7 | 43.0 | 42.3 | 42.5 |
| Good, percentb | NR | NR | 28.1 | 22.7 | 20.9 | 20.4 | 26.3 | 25.2 | 27.1 | 29.0 | 31.6 | 31.5 | 33.3 | 35.0 | 37.4 | 39.6 | 40.1 | 40.5 | 40.6 |
| Very good, percent | 53.9 | 53.5 | 31.0 | 3.5 | 2.9 | 10.3 | 6.8 | 4.2 | 6.6 | 6.8 | 6.8 | 7.7 | 7.9 | 8.6 | 7.4 | 7.9 | 10.3 | 10.0 | 10.3 |
| Unpaved, percent | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N |
| Miles not reporteda | N | N | N | 1,846 | 1,377 | 1,166 | 617 | 579 | 397 | 281 | 353 | 167 | 82 | 81 | 98 | 108 | 84 | 78 | 152 |
| Other principal arterials miles reported | 51,987 | 52,349 | 52,165 | 30,337 | 38,598 | 41,444 | 44,498 | 45,009 | 44,886 | 48,045 | 47,890 | 48,931 | 50,016 | 53,431 | 56,831 | 59,743 | 61,064 | 61,259 | 62,584 |
| Poor, percent | 5.9 | 6.6 | 6.8 | 9.2 | 12.5 | 12.4 | 11.8 | 12.1 | 12.9 | 12.5 | 13.2 | 12.9 | 13.3 | 12.7 | 12.2 | 11.8 | 11.1 | 11.4 | 11.6 |
| Mediocre, percentb | NR | NR | 11.5 | 13.3 | 16.3 | 14.7 | 14.1 | 14.6 | 18.5 | 18.1 | 16.8 | 16.4 | 16.4 | 16.4 | 15.5 | 15.7 | 14.5 | 15.4 | 15.2 |
| Fair, percent | 49.0 | 49.1 | 34.8 | 55.0 | 50.8 | 47.2 | 48.9 | 49.5 | 45.3 | 45.2 | 45.1 | 45.7 | 46.1 | 46.7 | 46.8 | 47.2 | 44.9 | 45.8 | 45.8 |
| Good, percentb | NR | NR | 21.4 | 19.3 | 16.6 | 15.9 | 17.5 | 17.8 | 17.6 | 18.8 | 19.4 | 19.5 | 19.4 | 19.5 | 20.0 | 20.1 | 21.4 | 21.7 | 21.8 |
| Very good, percent | 45.1 | 44.3 | 25.3 | 3.3 | 3.8 | 9.7 | 7.7 | 6.0 | 5.8 | 5.4 | 5.4 | 5.5 | 4.9 | 4.7 | 5.5 | 5.3 | 8.2 | 5.6 | 5.5 |
| Unpaved, percent | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N |
| Miles not reporteda | N | N | N | 22,498 | 14,492 | 11,352 | 8,485 | 8,209 | 8,246 | 5,154 | 5,426 | 4,126 | 3,422 | 3,440 | 2,863 | 2,064 | 1,765 | 2,030 | 1,975 |
| Minor arterials miles reported | 74,656 | 74,979 | 80,368 | 86,819 | 87,852 | 88,510 | 89,020 | 88,484 | 88,667 | 88,663 | 88,338 | 88,250 | 89,559 | 92,527 | 96,170 | 100,290 | 101,637 | 102,786 | 104,883 |
| Poor, percent | 8.9 | 7.4 | 7.9 | 7.9 | 6.7 | 6.7 | 6.9 | 7.2 | 7.3 | 9.1 | 10.0 | 10.5 | 10.5 | 11.4 | 13.0 | 12.3 | 12.2 | 13.2 | 12.6 |
| Mediocre, percentb | NR | NR | 14.3 | 13.8 | 12.3 | 13.6 | 13.0 | 13.0 | 12.2 | 13.2 | 16.0 | 15.9 | 16.1 | 16.5 | 15.8 | 15.2 | 14.6 | 14.7 | 14.6 |
| Fair, percent | 48.5 | 49.9 | 34.1 | 40.2 | 38.1 | 36.9 | 37.9 | 37.9 | 39.5 | 40.7 | 39.8 | 41.1 | 40.7 | 41.6 | 40.8 | 40.7 | 40.1 | 39.3 | 40.5 |
| Good, percentb | NR | NR | 19.2 | 18.4 | 20.5 | 20.4 | 20.7 | 21.4 | 21.1 | 18.5 | 16.9 | 16.8 | 17.4 | 16.7 | 15.9 | 16.4 | 16.2 | 16.5 | 16.3 |
| Very good, percent | 42.1 | 42.1 | 24.0 | 19.4 | 22.1 | 22.1 | 21.1 | 20.6 | 19.9 | 18.6 | 17.3 | 15.7 | 15.3 | 13.8 | 14.5 | 15.4 | 16.9 | 16.3 | 16.0 |
| Unpaved, percent | 0.5 | 0.6 | 0.5 | 0.4 | 0.3 | 0.3 | 0.4 | N | N | N | N | N | N | N | N | N | N | N | N |
| Miles not reporteda | N | N | N | N | N | N | N | 374 | N | N | N | N | N | N | N | N | N | N | N |
| Collectors miles reported | 78,248 | 77,097 | 82,657 | 84,856 | 86,098 | 87,331 | 87,790 | 86,666 | 86,705 | 86,821 | 86,030 | 86,265 | 87,754 | 94,939 | 99,675 | 103,979 | 106,843 | 107,336 | 111,655 |
| Poor, percent | 16.5 | 11.2 | 10.5 | 10.6 | 9.8 | 9.7 | 9.7 | 10.6 | 10.4 | 13.4 | 14.7 | 14.6 | 15.4 | 16.5 | 18.1 | 16.9 | 18.8 | 19.8 | 18.6 |
| Mediocre, percentb | NR | NR | 16.9 | 16.8 | 16.2 | 16.8 | 16.6 | 16.0 | 15.0 | 14.9 | 17.4 | 17.3 | 17.4 | 17.5 | 16.7 | 16.6 | 16.1 | 16.6 | 16.6 |
| Fair, percent | 50.4 | 53.5 | 35.2 | 40.0 | 40.0 | 39.0 | 39.2 | 39.0 | 39.9 | 37.7 | 35.7 | 36.6 | 36.8 | 36.0 | 34.3 | 35.8 | 35.1 | 34.5 | 36.5 |
| Good, percentb | NR | NR | 17.3 | 16.1 | 17.0 | 17.2 | 18.2 | 18.4 | 17.6 | 15.4 | 14.2 | 13.4 | 13.7 | 13.4 | 13.2 | 14.4 | 12.9 | 12.7 | 12.2 |
| Very good, percent | 31.7 | 34.2 | 19.1 | 15.5 | 16.0 | 16.6 | 15.4 | 15.9 | 17.1 | 18.6 | 18.0 | 18.1 | 16.7 | 16.6 | 17.7 | 16.3 | 17.1 | 16.4 | 16.1 |
| Unpaved, percent | 1.3 | 1.1 | 1.1 | 1.0 | 0.9 | 0.8 | 0.9 | N | N | N | N | N | N | N | N | N | N | N | N |
| Miles not reporteda | N | N | N | N | N | N | N | 663 | N | N | N | N | N | N | N | N | N | N | N |
KEY: N = data do not exist; NR = not reported; Z = value too small to report.
a Historical differences in Miles not reported result from the transition from the Present Serviceability Rating (PSR) to the International Roughness Indicator (IRI).
b For 1990 and 1991, this category is Included in row below.
NOTES
Numbers may not add to totals due to rounding.
Interstates have stricter roughness standards than other roads and its roughness classifications are not comparable with the other categories.
Data are for the 50 states and the District of Columbia. The terms Poor and Mediocre refer to Federal Highway Administration (FHWA)'s pavement condition criteria categories for quantitative International Roughness Index and Present Serviceability Ratings. For further information, refer to the U.S. Department of Transportation, FHWA, Status of the Nation's Highways, Bridges, and Transit: 2002 Conditions and Performance Report, Exhibit 3-3, available at: http://www.fhwa.dot.gov/policy, as of January 2010.
Data prior to 1993 are not comparable with later years because of differences in pavement condition indicators used for the two periods. For additional information, refer to the accuracy profile in the appendix of the Status of the Nation's Highways, Bridges, and Transit: 2002 Conditions and Performance Report. Total mileage in this table will not match that in table 1-5 due to a change in the method of preparing mileage data derived from the Highway Performance Monitoring System, beginning with the 1997 issue of FHWA's Highway Statistics.
SOURCES
Rural major collector, urban minor arterial, and urban collector:
U.S. Department of Transportation, Federal Highway Administration, Highway Statistics (Washington, DC: Annual Issues), table HM-63, available at http://www.fhwa.dot.gov/policy/ohpi/hss/index.cfm as of Aug. 18, 2010.
All other categories except rural major collector, urban minor arterial, and urban collector:
1990-92: U.S. Department of Transportation, Federal Highway Administration, Highway Statistics (Washington, DC: Annual Issues), table HM-63, available at http://www.fhwa.dot.gov/policy/ohpi/hss/index.cfm as of Aug. 18, 2010.
1993-2008: Ibid., table HM-64, available at http://www.fhwa.dot.gov/policy/ohpi/hss/index.cfm as of Aug. 18, 2010.