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 |
| Urban | 135,339 | 151,171 | 160,605 | 0.19 |
| Rural | 455,529 | 448,594 | 446,773 | -0.02 |
| Structurally Deficient Bridges, percent | 14.2% | 12.3% | 11.0% | -0.03 |
| Urban | 9.5% | 8.8% | 7.5% | -0.02 |
| Rural | 15.6% | 13.5% | 12.3% | -0.03 |
| Functionally Obsolete Bridges, percent | 15.4% | 14.9% | 14.0% | -0.01 |
| Urban | 24.9% | 24.9% | 24.0% | -0.01 |
| Rural | 12.5% | 11.5% | 10.4% | -0.02 |
| TOTAL ADT All Bridges | 3,968,243,689 | 4,342,305,019 | 4,485,265,660 | 0.13 |
| Urban ADT | 2,911,076,044 | 3,278,861,311 | 3,442,148,976 | 0.18 |
| Rural ADT | 1,057,167,645 | 1,063,443,708 | 1,043,116,684 | -0.01 |
| Structurally Deficient Bridges ADT, percent | 8.0% | 7.3% | 5.9% | -0.02 |
| Urban ADT | 8.3% | 7.6% | 6.0% | -0.02 |
| Rural ADT | 7.0% | 6.5% | 5.7% | -0.01 |
| Functionally Obsolete Bridges ADT, percent | 22.0% | 22.0% | 21.3% | -0.01 |
| Urban ADT | 24.5% | 24.9% | 23.9% | -0.01 |
| Rural ADT | 15.1% | 13.1% | 12.5% | -0.03 |
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.