Browse Bridge Database
23,716 bridges in the FHWA National Bridge Inventory in Iowa.
National Bridge Inventory Database
Browse 23,716 bridges from the Federal Highway Administration National Bridge Inventory. Filter by state, condition rating, or search by name and location.
| Bridge | Location | Condition | Year Built | Length | ADT |
|---|---|---|---|---|---|
| SPILLWAY | Iowa | Fair | 1935 | 19.5 m | 400 |
| BUTTRICKS CREEK | Iowa | Fair | 1971 | 31.4 m | 399 |
| CREEK | Iowa | Poor | 1939 | 13.6 m | 399 |
| MIDDLE MILL CREEK | Iowa | Fair | 1988 | 7.9 m | 399 |
| DRY RUN | Iowa | Fair | 1988 | 27.7 m | 399 |
| RAT CREEK | Iowa | Fair | 1971 | 11.0 m | 399 |
| CLEAR CREEK | Iowa | Fair | 1959 | 12.8 m | 399 |
| BRUSHY CREEK | Iowa | Good | 2014 | 58.5 m | 399 |
| SOUTH RACCOON RIVER | Iowa | Good | 2020 | 11.9 m | 399 |
| LIZARD CREEK | Iowa | Fair | 1970 | 24.4 m | 399 |
| ROCK RIVER | Iowa | Poor | 1970 | 106.1 m | 399 |
| EAST IOWA RIVER | Iowa | Good | 1957 | 44.2 m | 399 |
| EAST IOWA RIVER | Iowa | Good | 2007 | 39.0 m | 399 |
| CREEK | Iowa | Fair | 1965 | 8.8 m | 399 |
| E.BR.WOLF CREEK | Iowa | Fair | 1992 | 11.0 m | 399 |
| WOLF CREEK | Iowa | Good | 2009 | 39.0 m | 399 |
| WOLF CREEK | Iowa | Good | 2010 | 46.6 m | 399 |
| I-29 | Iowa | Fair | 1972 | 81.7 m | 399 |
| CREEK | Iowa | Fair | 1969 | 9.8 m | 399 |
| PILOT CREEK (DD#63) | Iowa | Fair | 1986 | 23.8 m | 399 |
| NORTH LIZARD CREEK | Iowa | Fair | 1986 | 23.8 m | 399 |
| I-35 | Iowa | Good | 1966 | 66.4 m | 399 |
| E FORK E NODAWAY RIVER | Iowa | Good | 2008 | 40.5 m | 399 |
| EAST NODAWAY RIVER | Iowa | Poor | 1955 | 54.6 m | 399 |
| W FORK LITTLE SIOUX | Iowa | Good | 2002 | 11.6 m | 399 |
| WILLOW CREEK | Iowa | Good | 2009 | 36.6 m | 399 |
| INDIAN CREEK | Iowa | Good | 1998 | 56.1 m | 399 |
| RAPID CR | Iowa | Poor | 1960 | 12.2 m | 398 |
| CLANTON CREEK | Iowa | Good | 2023 | 58.5 m | 397 |
| OTTER CREEK | Iowa | Fair | 1979 | 36.6 m | 397 |
| LITTLE SIOUX RIVER | Iowa | Good | 1987 | 88.7 m | 396 |
| MONONA-HARRISON DITCH | Iowa | Good | 2004 | 66.1 m | 396 |
| ELK CREEK | Iowa | Good | 2019 | 43.2 m | 396 |
| CASTLE HILL CREEK | Iowa | Fair | 1986 | 7.9 m | 395 |
| SMALL STREAM | Iowa | Good | 2003 | 27.7 m | 393 |
| BRANCH BEAVER CREEK | Iowa | Poor | 1966 | 18.9 m | 393 |
| TEN MILE CREEK | Iowa | Fair | 2005 | 16.2 m | 393 |
| DEER CREEK | Iowa | Fair | 1972 | 23.8 m | 393 |
| DRAINAGE DITCH | Iowa | Fair | 1971 | 23.8 m | 393 |
| DRAINAGE DITCH | Iowa | Fair | 1971 | 7.6 m | 393 |
| BREWER CREEK | Iowa | Good | 1996 | 17.7 m | 393 |
| UPPER IOWA | Iowa | Poor | 1950 | 76.8 m | 393 |
| UPPER IOWA | Iowa | Poor | 1949 | 16.2 m | 393 |
| UPPER IOWA | Iowa | Poor | 1949 | 25.3 m | 393 |
| UPPER IOWA | Iowa | Poor | 1950 | 7.6 m | 393 |
| WAPSIPINICON RIVER | Iowa | Fair | 1950 | 98.1 m | 393 |
| UPPER IOWA | Iowa | Good | 2014 | 90.5 m | 393 |
| BRUSH CREEK | Iowa | Poor | 1927 | 24.4 m | 393 |
| I-35 | Iowa | Fair | 1972 | 95.7 m | 393 |
| SPRING CREEK | Iowa | Good | 2006 | 27.4 m | 393 |
Frequently Asked Questions
The National Bridge Inventory (NBI) is a federal database maintained by the Federal Highway Administration containing inspection data for all bridges on public roads in the U.S. with a span of more than 20 feet. Bridge owners must inspect each structure at least every 24 months.
ADT stands for Average Daily Traffic, the average number of vehicles crossing the bridge per day. Bridges are sorted by ADT by default because high-traffic bridges in poor condition pose the greatest risk to the most people.
Yes. Use the search field above to find bridges by name, location, or features crossed. You can also combine the search with state and condition filters to narrow your results.