TABLE 2-2 Condition and Average Daily Traffic (ADT) of U.S. Highway Bridges: 2002, 2007, and 2012
|2002||2007||2012||Change from 2002 to 2012, percentage points|
|TOTAL All Bridges||590,868||599,765||607,378||0.03|
|Structurally Deficient Bridges, percent||14.2%||12.3%||11.0%||-0.03|
|Functionally Obsolete Bridges, percent||15.4%||14.9%||14.0%||-0.01|
|TOTAL ADT All Bridges||3,968,243,689||4,342,305,019||4,485,265,660||0.13|
|Structurally Deficient Bridges ADT, percent||8.0%||7.3%||5.9%||-0.02|
|Functionally Obsolete Bridges ADT, percent||22.0%||22.0%||21.3%||-0.01|
KEY: ADT = Average Daily Traffic
NOTES: Bridges with a Year Built or Year Reconstructed within the past 10 years will not be assigned a deficient status. Therefore, when referring to the deficiency being calculated not using the 10-yr rule, the status will be calculated without taking into consideration the year built or the year reconstructed. U.S. totals include the 50 states, the District of Columbia, and Puerto Rico.Table includes: Rural–Interstate, principal arterial, minor arterial, major collector, minor collector and local roads; Urban–Interstate, other freeways or expressways, other principal arterial, minor arterial, collector, and local roads. Data for 2001-12 are as of December of those years.
SOURCES: Condition: U.S. Department of Transportation (USDOT), Federal Highway Administration (FHWA), Office of Bridge Technology, National Bridge Inventory as cited in USDOT, Bureau of Transportation Statistics, National Transportation Statistics. Table 1-28. Available at http://www.bts.gov/ as of January 2014. ADT: USDOT/FHWA. 2002, 2007, 2012 Count, Area, Length, and ADT of Bridges by Highway System. ADT tables. Available at http://www.fhwa.dot.gov/bridge/fc.cfm as of February 2014.