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

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

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  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.