Data for Figure 1-2: Urban Road Conditions in Michigan: 2000,,,,,,
(Miles),,,,,,
,Interstate ,Other Freeways & Expressways,Other Principal Arterial ,Urban Minor Arterial ,Urban Collector,
Total,499,225,"1,973",517,39,
Very good ,20,8,12,22,0,
Good,180,35,106,70,0,
Fair,107,141,742,254,7,
Mediocre ,143,33,540,125,3,
Poor,49,8,573,46,29,
(Percent),,,,,,
,Interstate ,Other Freeways & Expressways,Other Principal Arterial ,Urban Minor Arterial ,Urban Collector,
Total,100,100,100,100,100,
Very good ,4,4,1,4,0,
Good,36,16,5,14,0,
Fair,21,63,38,49,18,
Mediocre ,29,15,27,24,8,
Poor,10,4,29,9,74,
NOTE: Numbers may not add to 100 due to rounding.,,,,,,
"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.",,,,,,