PENNDOT Report Card

86 Erie 90 McKean Potter Tioga Bradford Wayne PA Warren Susquehanna 81 Crawford

Wyoming Venango Elk Forest Lackawanna Cameron Sullivan Pike Lycoming Clinton Mercer 79 84 Clarion Luzerne Jefferson 80 380 180 Columbia Monroe Lawrence Butler Montour 80 80 Armstrong Union Carbon Indiana Clearfield Centre 81 Beaver Northumberland Northampton Snyder Schuylkill Lehigh Cambria Mifflin Huntingdon 78 Juniata Dauphin 376 Berks Bucks

99 Blair Perry Montgomery 279 Westmoreland 81 Lebanon 79 Allegheny 176

70 Lancaster 76 Washington Cumberland Chester Franklin 476 Philadelphia 79 Fulton 95 70 81 83 Delaware Greene Fayette Somerset Bedford Adams York PENNDOTIRI MAINTAINING INTERSTATE SMOOTHNESS PennDOT’s aggressive interstate rehabilitation program continues to pay dividends in terms of road smoothness and ride quality. Pavement smoothness is measured by what is known as the International Roughness Index, or IRI. This number is determined by using a laser device to measure motion in a vehicle as it passes over the highways. The lower the number, the smoother the pavement. Numbers below 95 are considered to be good. The median IRI number for the entire 1,200-mile interstate system in Pennsylvania was 86 in 2003, a significant improvement. The previous years, 2002 and 2001, the IRI stayed constant at 89. The nationwide IRI number for 2002 also improved, from 85 in 2001 to 84 in 2002. The charts below reflects the IRI median numbers for Pennsylvania and the United States as well as IRI numbers for individual long-distance interstates in Pennsylvania. Happy travels!

120 IRI MEDIAN Median IRIs For 115 Long-Distance Interstates

110 2002 2003 Interstate 70 80 71 105 Interstate 76 116 108 PA Interstate 78 111 109 100 Interstate 79 81 77 Interstate 80 81 78 95 Interstate 81 86 84 u.s. Interstate 83 94 79 90 Interstate 84 107 110 Interstate 86 106 106 85 Lower Is Better Interstate 90 65 65 Interstate 95 117 117 Interstate 99 99 101 80 96 97 98 99 00 01 02 03

APRIL 2004