2004 Bridge Inventory

Inventory Index Page

Better Roads has reported annually the state of the nations bridges since 1979.  Our thanks to all the state highway engineers for their continuing cooperation and special effort to provide current data.  To see the previous year - click here.

FHWA, in consultation with the States, has assigned a sufficiency rating (SR) to each bridge (greater than 20 ft.) inventoried.  Formula (SR) rating factors are as outlined in the current "recording and Coding Guide for Structures Inventory and Appraisal (SI&A) of the Nation's Bridges."

Per FHWA:  "An SD bridge is one that (1) has been restricted to light vehicles only, (2) is closed), (3) requires immediate rehabilitation to remain open. An FO bridge is one in which the deck geometry, load carrying capacity (comparison of the original design load to the State legal load), clearance, or approach roadway alignment no longer meets the usual criteria for the system of which it is an integral part."  See also http://www.fhwa.dot.gov/legsregs/directives/fapg/0650dsup.htm

*SD/FO = Structurally Deficient or Functionally Obsolete

Information current through October 2004.

Bridge Inventory 2004 - Text Format
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State

Total Interstate & State Bridges

Total *SD/FO

%

Total City/ County/
Township
Bridges

 Total *SD/FO

%

Total All Bridges

Combined Total *SD/FO

%
Alabama 5,615 1,224 22% 10,019 3,021 30% 15,634 4,245 27%
Alaska 878 170 19% 144 54 38% 1,022 224 22%
Arizona 4,579 148 3% 2,268 202 9% 6,847 350 5%
Arkansas 7,058 1,320 19% 5,255 1,687 32% 12,313 3,007 24%
California 12,406 1,701 14% 12,139 2,561 21% 24,545 4,262 17%
Colorado 3,736 504 13% 4,739 637 13% 8,475 1,141 13%
Connecticut 2,912 988 34% 1,235 400 32% 4,147 1,388 33%
Delaware 886 152 17% 7 4 57% 893 156 17%
District Of Columbia 214 131 61% n/a n/a n/a 214 131 61%
Florida 6,268 853 14% 4,786 1,240 26% 11,054 2,093 19%
Georgia 5,919 959 16% 8,442 1,947 23% 14,361 2,906 20%
Hawaii 746 276 37% 398 148 37% 1,144 424 37%
Idaho 1,260 283 22% 2,253 365 16% 3,513 648 18%
Illinois 8,074 1,621 20% 17,890 3,103 17% 25,964 4,724 18%
Indiana 5,622 727 13% 12,605 3,265 26% 18,227 3,992 22%
Iowa 4,020 527 13% 20,850 6,047 29% 24,870 6,574 26%
Kansas 5,274 876 17% 20,630 5,017 24% 25,904 5,893 23%
Kentucky 9,198 2,614 28% 4,882 1,645 34% 14,080 4,259 30%
Louisiana 7,887 2,292 29% 5,336 2,006 38% 13,223 4,298 33%
Maine 2,059 607 29% 208 109 52% 2,267 716 32%
Maryland 2,758 688 25% 2,174 733 34% 4,932 1,421 29%
Massachusetts 3,409 1,185 35% 1,544 600 39% 4,953 1,785 36%
Michigan 4,421 1,343 30% 6,326 1,783 28% 10,747 3,126 29%
Minnesota 3,841 383 10% 9,900 1,516 15% 13,741 1,899 14%
Mississippi 5,481 1,223 22% 10,928 3,378 31% 16,409 4,601 28%
Missouri 10,183 2,959 29% 13,567 5,046 37% 23,750 8,005 34%
Montana 2,608 433 17% 1,797 530 29% 4,405 963 22%
Nebraska 3,505 244 7% 12,090 3,774 31% 15,595 4,018 26%
Nevada 1,023 37 4% 671 60 9% 1,694 97 6%