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Table 1-27: Condition of U.S. Highway Bridges
Excel | CSV
| TOTAL
bridges |
572,205 |
574,036 |
572,197 |
573,716 |
576,460 |
581,135 |
581,863 |
582,751 |
582,976 |
585,542 |
589,674 |
589,685 |
590,877 |
590,753 |
| Urban
bridges |
108,770 |
112,363 |
115,312 |
117,488 |
121,141 |
122,537 |
124,950 |
127,633 |
128,312 |
130,339 |
133,384 |
133,401 |
135,337 |
135,228 |
| Rural
bridges |
463,435 |
461,673 |
456,885 |
456,228 |
455,319 |
458,598 |
456,913 |
455,118 |
454,664 |
455,203 |
456,290 |
456,284 |
455,540 |
455,525 |
| Urban
deficient bridges, total |
47,113 |
47,874 |
42,566 |
42,443 |
42,716 |
42,692 |
43,181 |
41,711 |
41,661 |
42,032 |
42,093 |
42,088 |
42,179 |
42,189 |
| Structurally |
16,847 |
17,032 |
16,323 |
15,932 |
15,692 |
15,205 |
15,094 |
14,846 |
14,073 |
12,967 |
12,695 |
12,705 |
12,504 |
12,310 |
| Functionally |
30,266 |
30,842 |
26,243 |
26,511 |
27,024 |
27,487 |
28,087 |
26,865 |
27,588 |
29,065 |
29,398 |
29,383 |
29,675 |
29,879 |
| Rural
deficient bridges, total |
191,107 |
184,253 |
156,525 |
149,537 |
144,799 |
142,575 |
139,545 |
134,174 |
130,911 |
128,018 |
122,993 |
122,946 |
120,612 |
118,381 |
| Structurally |
121,018 |
117,502 |
102,375 |
96,048 |
91,991 |
89,112 |
86,424 |
83,629 |
78,999 |
75,183 |
70,881 |
70,890 |
68,762 |
67,391 |
| Functionally |
70,089 |
66,751 |
54,150 |
53,489 |
52,808 |
53,463 |
53,121 |
50,545 |
51,912 |
52,835 |
52,112 |
52,056 |
51,850 |
50,990 |
| All
deficient bridges, total |
238,220 |
232,127 |
199,091 |
191,980 |
187,515 |
185,267 |
182,726 |
175,885 |
172,572 |
170,050 |
165,086 |
165,034 |
162,791 |
160,570 |
| Structurally |
137,865 |
134,534 |
118,698 |
111,980 |
107,683 |
104,317 |
101,518 |
98,475 |
93,072 |
88,150 |
83,576 |
83,595 |
81,266 |
79,701 |
| Functionally |
100,355 |
97,593 |
80,393 |
80,000 |
79,832 |
80,950 |
81,208 |
77,410 |
79,500 |
81,900 |
81,510 |
81,439 |
81,525 |
80,869 |
NOTES
U.S. totals include the 50 states, the District of Columbia, and Puerto Rico.
Structurally deficient bridges are defined as those needing significant maintenance attention, rehabilitation, or replacement.
Functionally deficient bridges are defined as those that do not have the lane widths, shoulder widths, or vertical clearances adequate to serve traffic demand, or the bridge may not be able to handle occasional roadway flooding.
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 1990, 1992, 1997-99, and 2001 are as of December of those years; data for 1991 and 1994-96 are as of June of those years; data for 1993 are as of September of that year; data for 2000 are as of August of that year; data for 2002-03 are as of July of those years.
SOURCES
1990-2000: U.S. Department of Transportation, Federal Highway Administration, Office of Bridge Technology, National Bridge Inventory Database, personal communication, Aug. 14, 2001.
2001: U.S. Department of Transportation, Federal Highway Administration, Office of Bridge Technology, National Bridge Inventory Database, Count of Bridges by Highway System, Internet site http://www.fhwa.dot.gov/bridge/britab.htm as of Aug. 28, 2002.
2002-03: Ibid., National Bridge Inventory Database, CD-ROM (Washington, DC: Annual Issues), June 23, 2003 and July 20, 2004.
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