Table 1-23: Condition of U.S. Roadways by Functional System

Table 1-23: Condition of U.S. Roadways by Functional System

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  1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000
Rural                     
Interstates                     
Miles reported33,547 33,677 33,027 29,089 31,502 31,254 31,312 31,431 30,498 32,820 32,888
Poor (%) 8.7 7.6 5.2 7.0 6.5 6.3 3.9 3.6 4.1 2.4 2.1
Mediocre (%) a a 14.1 27.7 26.5 20.7 19.1 19.1 16.5 14.0 12.2
Fair (%) 31.9 31.7 17.4 20.9 23.9 22.3 21.7 20.7 17.8 18.1 16.9
Good (%) a a 27.6 36.1 33.2 36.9 38.8 41.0 42.6 44.0 44.8
Very good (%) 59.5 60.7 35.6 8.3 9.9 13.9 16.6 15.7 19.0 21.5 23.9
Unpaved (%) N N N N N N N N N N N
Miles not reportedN N N 3,563 955 1,326 1,508 1,382 2,313 153 162
Other principal arterials                     
Miles reported83,802 85,729 94,798 78,296 89,506 89,265 92,103 92,170 93,333 97,247 97,284
Poor (%) 3.4 3.6 3.3 2.9 2.4 4.4 1.4 1.6 1.4 0.9 0.8
Mediocre (%) a a 5.9 9.2 8.2 7.6 5.8 4.9 4.6 3.7 3.2
Fair (%) 42.6 44.5 34.6 54.8 57.4 51.1 49.1 47.7 43.3 41.5 38.7
Good (%) a a 28.5 26.7 26.6 27.9 34.4 R37.2 38.3 40.5 42.9
Very good (%) 53.8 51.9 27.6 6.4 5.4 9.0 9.3 8.6 12.3 13.5 14.4
Unpaved (%) N N N N N N N N N N N
Miles not reportedN N N 17,905 7,489 8,683 6,028 6,083 5,524 1,587 1,625
Minor arterials                     
Miles reported144,735 142,866 137,637 134,837 124,877 121,443 126,381 126,525 130,591 135,192 136,092
Poor (%) 4.6 4.3 3.9 3.9 3.5 3.7 2.3 2.3 1.9 1.7 1.7
Mediocre (%) a a 7.1 9.1 10.5 9.0 8.2 6.7 6.0 5.2 5.3
Fair (%) 48.2 47.3 36.4 53.5 57.9 54.7 50.7 50.4 47.2 47.3 46.2
Good (%) a a 25.3 25.0 23.6 23.9 31.0 33.6 34.3 34.4 35.6
Very good (%) 47.2 48.4 26.8 8.5 4.5 8.7 7.7 7.0 10.6 11.4 11.2
Unpaved (%) - - N N N N N N N N N
Miles not reportedN N N 12,740 13,294 15,708 R10,978 10,978 6,664 1,968 1,227
Major collectors                     
Miles reported436,365 436,737 434,175 432,223 431,111 431,712 432,117 386,122 R171,134 163,544 388,485
Poor (%) 8.9 7.7 7.8 6.8 6.5 6.5 6.7 7.8 R8.8 9.3 8.5
Mediocre (%) a a 11.0 12.4 11.3 11.4 10.3 12.3 R13.0 12.1 12.7
Fair (%) 43.8 45.2 32.3 37.7 33.5 30.8 R34.4 37.6 R33.5 33.2 43.7
Good (%) a a 17.7 16.3 16.1 17.4 20.0 23.0 R21.3 20.9 22
Very good (%) 36.2 36.1 20.4 15.9 21.9 23.7 18.4 19.3 R23.4 24.5 13.2
Unpaved (%) 11.1 11.0 10.7 10.9 10.7 10.2 10.1 N N N N
Miles not reportedbN N N N N N N 2,402 R217,566 U U

  1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000
Urban                     
Interstates                     
Miles reported11,527 11,603 12,466 10,738 12,338 12,307 12,430 12,477 12,231 13,109 13,139
Poor (%) 8.6 7.7 7.1 10.6 13.0 10.4 8.6 9.0 9.4 7.3 6.5
Mediocre (%) a a 13.2 30.9 29.9 26.8 28.3 27.0 25.5 23.1 21.7
Fair (%) 32.2 32.3 17.0 23.6 24.2 23.8 24.7 24.4 21.8 22.6 21.4
Good (%) a a 28.0 28.3 26.7 27.5 30.7 32.9 32.0 34.9 37.1
Very good (%) 59.1 60.0 34.7 6.5 6.2 11.4 7.6 6.7 11.4 12.0 13.3
Unpaved (%) N N N N N N N N N N N
Miles not reportedN N N 2,140 788 857 787 771 1,040 230 226
Other freeways and expressways                     
Miles reported7,670 7,714 8,465 7,011 7,618 7,804 8,410 8,480 8,772 8,860 8,794
Poor (%) 2.2 2.3 2.6 3.8 5.3 4.8 3.4 3.3 3.2 2.6 2.8
Mediocre (%) a a 5.9 9.4 12.7 9.8 8.7 8.7 8.7 8.0 8.1
Fair (%) 43.9 44.2 32.4 60.6 58.1 54.7 54.7 58.5 54.3 53.6 50.6
Good (%) a a 28.1 22.7 20.9 20.4 26.3 25.2 27.1 30.0 31.6
Very good (%) 53.9 53.5 31.0 3.5 2.9 10.3 6.8 4.2 6.6 6.8 6.8
Unpaved (%) N N N N N N N N N N N
Miles not reportedN N N 1,846 1,377 1,166 R617 579 397 281 355
Other principal arterials                     
Miles reported51,987 52,349 52,165 30,337 38,598 41,444 44,498 45,009 44,886 48,045 47,797
Poor (%) 5.9 6.6 6.8 9.2 12.5 12.4 11.8 12.1 12.9 12.5 13.2
Mediocre (%) a a 11.5 13.3 16.3 14.7 14.1 14.6 18.5 18.1 16.8
Fair (%) 49.0 49.1 34.8 55.0 50.8 47.2 48.9 49.5 45.3 45.2 45.1
Good (%) a a 21.4 19.3 16.6 15.9 17.5 17.8 17.6 18.8 19.4
Very good (%) 45.1 44.3 25.3 3.3 3.8 9.7 7.7 6.0 5.8 5.4 5.4
Unpaved (%) N N N N N N N N N N N
Miles not reportedN N N 22,498 14,492 11,352 8,485 8,209 8,246 5,154 5,518
Minor arterials                     
Miles reported74,656 74,979 80,368 86,819 87,852 88,510 89,020 88,484 R45,275 43,481 88,339
Poor (%) 8.9 7.4 7.9 7.9 6.7 6.7 6.9 7.2 R5.7 5.8 10.0
Mediocre (%) a a 14.3 13.8 12.3 13.6 13.0 13.0 12.2 11.7 16.0
Fair (%) 48.5 49.9 34.1 40.2 38.1 36.9 37.9 37.9 R36.0 35.3 39.8
Good (%) a a 19.2 18.4 20.5 20.4 20.7 21.4 R22.1 20.5 16.9
Very good (%) 42.1 42.1 24.0 19.4 22.1 22.1 21.1 20.6 R24.0 26.8 17.3
Unpaved (%) 0.5 0.6 0.5 0.4 0.3 0.3 0.4 N N N N
Miles not reportedbN N N N N N N 374 R43,435 U U
Collectors                     
Miles reported78,248 77,097 82,657 84,856 86,098 87,331 87,790 86,666 R53,806 52,002 86,026
Poor (%) 16.5 11.2 10.5 10.6 9.8 9.7 9.7 10.6 R8.1 9.0 14.7
Mediocre (%) a a 16.9 16.8 16.2 16.8 16.6 16.0 R12.8 13.0 17.4
Fair (%) 50.4 53.5 35.2 40.0 40.0 39.0 39.2 39.0 R39.4 37.4 35.7
Good (%) a a 17.3 16.1 17.0 17.2 18.2 18.4 R18.8 17.2 14.2
Very good (%) 31.7 34.2 19.1 15.5 16.0 16.6 15.4 15.9 R20.9 23.4 18
Unpaved (%) 1.3 1.1 1.1 1.0 0.9 0.8 0.9 N N N N
Miles not reportedbN N N N N N N 663 R32,921 U U

KEY: N = data do not exist; R = revised; U = data are not available; - = value too small to report.

a Included in row below.

b The significant increase in miles not reported can be attributed to the fact that many states are electing to report pavement conditions by the more objective International Roughness Indicator (IRI) rather than by the Present Serviceability Rating (PSR), which has traditionally been used to determine pavement conditions for these systems.

NOTES: Because of the transition to a new indicator for pavement condition beginning with U.S. Department of Transportation, Federal Highway Administration (FHWA) data published in 1993, comparisons between pre-1993 data and 1993 and later data are difficult. Thus, trend comparisons should be made with care. For additional information, the reader is referred to the accuracy profile for this table in the appendix. Total mileage in this table will not match that in table 1-4 because of a change in the method of creating mileage-based tables derived from the Highway Performance Monitoring System, beginning with the 1997 issue of FHWA's Highway Statistics.

Data are for the 50 states and the District of Columbia.

Percents may not add to totals due to rounding.

SOURCES: 1990-92: U.S. Department of Transportation, Federal Highway Administration, Highway Statistics (Washington, DC: Annual issues), table HM-63.

1993-98, 2000: Ibid., Highway Statistics (Washington, DC: Annual issues), table HM-63 for rural major collector, urban minor arterial, and urban collector, and table HM-64 for all other categories.

1999: Ibid., personal communication, June 5, 2002.