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

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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 reported	33,547	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 reported	N	N	N	3,563	955	1,326	1,508	1,382	2,313	153	162
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	97,284
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 reported	N	N	N	17,905	7,489	8,683	6,028	6,083	5,524	1,587	1,625
Minor arterials
Miles reported	144,735	142,866	137,637	134,837	124,877	121,443	126,381	126,525	130,591	135,192	136,092
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 reported	N	N	N	12,740	13,294	15,708	^R10,978	10,978	6,664	1,968	1,227
Major collectors
Miles reported	436,365	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 reported^b	N	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 reported	11,527	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 reported	N	N	N	2,140	788	857	787	771	1,040	230	226
Other freeways and expressways
Miles reported	7,670	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 reported	N	N	N	1,846	1,377	1,166	^R617	579	397	281	355
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	47,797
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 reported	N	N	N	22,498	14,492	11,352	8,485	8,209	8,246	5,154	5,518
Minor arterials
Miles reported	74,656	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 reported^b	N	N	N	N	N	N	N	374	^R43,435	U	U
Collectors
Miles reported	78,248	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 reported^b	N	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.