BTS | Table 1-5: Michigan Road Condition by Functional System -- Urban (Miles)

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BTS Home > Publications > State Transportation Statistics > Michigan

Table 1-5: Michigan Road Condition by Functional System -- Urban (Miles)

Excel | CSV

	1995	1996	1997	1998	1999	2000
Interstate (total reported)	500	499	502	500	499	499
Very good	29	23	23	15	20	20
Good	193	189	192	129	179	180
Fair	108	117	117	131	112	107
Mediocre	144	137	137	151	138	143
Poor	26	33	33	74	50	49
Not reported	0	0	0	0	1	1
Other freeways and expressways (total reported)	218	221	221	221	225	225
Very good	2	2	2	0	8	8
Good	58	45	45	36	35	35
Fair	137	154	154	152	141	141
Mediocre	20	19	19	28	33	33
Poor	1	1	1	5	8	8
Not reported	0	0	0	3	0	0
Other principal arterial (total reported)	1,875	1,922	1,970	1,959	1,972	1,973
Very good	9	9	9	13	12	12
Good	112	109	110	103	106	106
Fair	769	841	869	739	744	742
Mediocre	505	480	483	541	533	540
Poor	480	483	499	563	577	573
Not reported	98	52	6	17	1	2
Urban minor arterial (total reported)	N	N	N	N	N	517
Very good	N	N	N	N	N	22
Good	N	N	N	N	N	70
Fair	N	N	N	N	N	254
Mediocre	N	N	N	N	N	125
Poor	N	N	N	N	N	46
Not reported	N	N	N	N	N	N
Urban collector (total reported)	N	N	N	N	N	39
Very good	N	N	N	N	N	0
Good	N	N	N	N	N	0
Fair	N	N	N	N	N	7
Mediocre	N	N	N	N	N	3
Poor	N	N	N	N	N	29
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.