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

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

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(Miles)

  Interstate Other Freeways & Expressways Other Principal Arterial Urban Minor Arterial Urban Collector
Total 525 475 2,236 3,306 3,748
Very good 29 20 25 16 55
Good 259 135 310 256 149
Fair 142 254 1,265 1,881 1,495
Mediocre 71 56 414 817 1,203
Poor 24 10 222 336 846

(Percent)

  Interstate Other freeways and expressways Other principal arterial Urban minor arterial Urban collector
Total 100 100 100 100 100
Very good 6 4 1 0 1
Good 49 28 14 8 4
Fair 27 53 57 57 40
Mediocre 14 12 19 25 32
Poor 5 2 10 10 23

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.