Figure 1-2: Urban Road Conditions in Maryland: 2000

Figure 1-2: Urban Road Conditions in Maryland: 2000

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(Miles)

  Interstate Other Freeways and Expressways Other Principal Arterial Urban Minor Arterial Urban Collector
Total 238 195 632 434 103
Very good 4 8 14 0 0
Good 110 75 128 31 17
Fair 74 95 306 254 48
Mediocre 32 13 98 80 30
Poor 18 4 86 69 8
Not reported 14 39 231 N N

(Percent)

  Interstate Other Freeways and Expressways Other Principal Arterial Urban Minor Arterial Urban Collector
Total 100 100 100 100 100
Very good 2 4 2 0 0
Good 46 38 20 7 17
Fair 31 26 20 10 20
Mediocre 13 23 28 49 26
Poor 8 9 29 34 37

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.