Data for Figure 1-2: Urban Road Conditions in Colorado: 2000,,,,,, (Miles),,,,,, ,Interstate ,Other Freeways & Expressways,Other Principal Arterial ,Urban Minor Arterial ,Urban Collector, Total,184,224,880,132,8, Very good ,2,3,8,0,1, Good,182,193,461,55,7, Fair,0,24,236,22,0, Mediocre ,0,4,142,33,0, Poor,0,0,33,22,0, ,,,,,, ,,,,,, (Percent),,,,,, ,Interstate ,Other Freeways & Expressways,Other Principal Arterial ,Urban Minor Arterial ,Urban Collector, Total,100,100,100,100,100, Very good ,1,1,1,0,13, Good,99,86,52,42,88, Fair,0,10,27,17,0, Mediocre ,0,2,16,25,0, Poor,0,0,4,17,0, ,,,,,, 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: 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.",,,,,,