1-5 National Highway System Pavement Condition
Thursday, January 8, 2015
percent of vehicle-miles traveled
| Year | Good | Acceptable | Not acceptable |
|---|---|---|---|
| 2000 | 48 | 43 | 9 |
| 2002 | 50 | 41 | 9 |
| 2004 | 52 | 39 | 9 |
| 2006 | 57 | 36 | 7 |
| 2008 | 57 | 35 | 8 |
| 2010 | 60 | 33 | 7 |
Condition Definition
Not acceptable IRI > 170
Acceptable IRI 95 – 170
Good IRI < 95
Note: Pavement condition is measured by the International Roughness Index (IRI).
Source: U.S. Department of Transportation, Federal Highway Administration, 2013 Status of the Nation's Highways, Bridges, and Transit: Conditions & Performance, available at www.fhwa.dot.gov/policy/2013cpr as of September 2014.