BTS | Table 1-4: Idaho Road Condition by Functional System -- Urban

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Table 1-4: Idaho Road Condition by Functional System -- Urban

(Miles)

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	1995	1996	1997	1998	1999	2000
Interstate (total reported)	81	79	83	85	85	86
Very good	0	20	18	17	25	32
Good	24	26	35	36	29	33
Fair	31	17	10	8	9	8
Mediocre	24	15	19	23	17	7
Poor	2	1	1	1	5	6
Not reported	0	0	0	0	0	0
Other freeways and expressways (total reported)	0	0	0	0	0	0
Very good	0	0	0	0	0	0
Good	0	0	0	0	0	0
Fair	0	0	0	0	0	0
Mediocre	0	0	0	0	0	0
Poor	0	0	0	0	0	0
Not reported	0	0	0	0	0	0
Other principal arterial (total reported)	222	222	225	240	257	257
Very good	0	12	6	8	15	9
Good	9	39	38	42	43	46
Fair	81	85	112	116	127	133
Mediocre	107	75	50	52	47	45
Poor	25	11	19	22	25	24
Not reported	0	0	9	18	4	5
Urban minor arterial (total reported)	N	N	N	N	N	59
Very good	N	N	N	N	N	0
Good	N	N	N	N	N	14
Fair	N	N	N	N	N	38
Mediocre	N	N	N	N	N	1
Poor	N	N	N	N	N	6
Not reported	N	N	N	N	N	N
Urban collector (total reported)	N	N	N	N	N	3
Very good	N	N	N	N	N	0
Good	N	N	N	N	N	0
Fair	N	N	N	N	N	0
Mediocre	N	N	N	N	N	3
Poor	N	N	N	N	N	0
Not reported	N	N	N	N	N	N

KEY: N = data do not exist.

NOTE: In 2000, the Federal Highway Administration began reporting road condition for urban minor arterials and urban collectors using the International Roughness Index, if available. In prior years, data were only available using the Present Serviceability Rating.

NOTE FOR DATA ON THIS PAGE: Road condition is based on measured pavement roughness using the International Roughness Index (IRI). IRI is a measure of surface condition. A comprehensive measure of pavement condition would require data on other pavement distresses such as rutting, cracking, and faulting.

SOURCE FOR DATA ON THIS PAGE: U.S. Department of Transportation, Federal Highway Administration, Highway Statistics, Washington, DC: annual editions, tables HM-63 and HM-64, available at http://www.fhwa.dot.gov/ as of Feb. 1, 2002.