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 |
|---|---|---|---|---|---|
| IOWA RIVER OVERFLOW | Iowa | Good | 2021 | 72.2 m | 737 |
| IOWA RIVER OVERFLOW | Iowa | Good | 2020 | 46.0 m | 737 |
| IOWA RIVER | Iowa | Good | 2021 | 59.4 m | 737 |
| W.FK GRAND RIVER | Iowa | Poor | 1935 | 65.2 m | 737 |
| CROOKED CREEK | Iowa | Fair | 1985 | 53.3 m | 737 |
| SMALL NATURAL STREAM | Iowa | Poor | 1935 | 6.4 m | 737 |
| SMALL STREAM | Iowa | Fair | 1984 | 10.1 m | 737 |
| DRAINAGE DITCH | Iowa | Fair | 1993 | 8.8 m | 737 |
| LITTLE MAQUOKETA RIVER | Iowa | Good | 1992 | 75.0 m | 737 |
| I-80 | Iowa | Good | 1992 | 97.2 m | 735 |
| STREAM | Iowa | Fair | 1966 | 17.7 m | 734 |
| SUGAR CREEK | Iowa | Good | 2000 | 50.9 m | 733 |
| WILLOW CREEK | Iowa | Fair | 1970 | 24.4 m | 731 |
| COBB CREEK | Iowa | Good | 2017 | 46.0 m | 730 |
| DRY CREEK | Iowa | Fair | 1974 | 31.4 m | 730 |
| BOHEMIAN CREEK | Iowa | Poor | 1951 | 28.0 m | 730 |
| CALAMUS CREEK | Iowa | Good | 2011 | 31.4 m | 730 |
| RICHLAND CREEK | Iowa | Good | 2010 | 7.9 m | 730 |
| STREAM | Iowa | Fair | 1966 | 7.9 m | 730 |
| DES MOINES RIVER | Iowa | Fair | 1948 | 213.1 m | 730 |
| KNAPP CREEK | Iowa | Fair | 1972 | 27.7 m | 730 |
| VOLGA RIVER | Iowa | Good | 1988 | 69.5 m | 729 |
| MAPLE CREEK | Iowa | Fair | 1988 | 26.8 m | 729 |
| SMALL STREAM | Iowa | Fair | 1968 | 9.8 m | 729 |
| UNNAMED CREEK | Iowa | Good | 1971 | 17.4 m | 728 |
| UNNAMED CREEK | Iowa | Fair | 1971 | 6.4 m | 728 |
| NO NAME CREEK | Iowa | Fair | 1971 | 21.1 m | 728 |
| SMALL STREAM | Iowa | Fair | 1900 | 6.4 m | 727 |
| WALNUT CREEK | Iowa | Fair | 1991 | 67.1 m | 727 |
| WILLOW CREEK | Iowa | Good | 2019 | 6.3 m | 727 |
| SMALL | Iowa | Fair | 1983 | 27.7 m | 727 |
| WET CREEK | Iowa | Fair | 1968 | 10.7 m | 727 |
| BRANCH OF WET CREEK | Iowa | Fair | 1968 | 6.4 m | 727 |
| BRANCH SALT CREEK | Iowa | Fair | 1998 | 9.1 m | 727 |
| FLOOD CREEK | Iowa | Good | 2002 | 58.5 m | 727 |
| BRANCH SALT CREEK | Iowa | Good | 1994 | 8.8 m | 727 |
| WAPSIPINICON RIVER | Iowa | Poor | 1976 | 110.0 m | 727 |
| OVERFLOW | Iowa | Fair | 1975 | 39.0 m | 727 |
| BUCK CREEK | Iowa | Poor | 1976 | 31.4 m | 727 |
| DRY CREEK | Iowa | Good | 2019 | 24.6 m | 724 |
| WILLOW CR | Iowa | Good | 1973 | 31.4 m | 722 |
| NO NAME | Iowa | Good | 1974 | 23.8 m | 722 |
| SMALL STREAM | Iowa | Fair | 1954 | 6.7 m | 722 |
| MORGAN BRANCH | Iowa | Fair | 1970 | 6.4 m | 720 |
| HOLCOMB CREEK | Iowa | Good | 1998 | 48.8 m | 720 |
| STREAM | Iowa | Fair | 1989 | 6.4 m | 720 |
| CHEQUEST CREEK | Iowa | Good | 1989 | 58.5 m | 720 |
| SMALL | Iowa | Fair | 1978 | 10.1 m | 720 |
| GLOVERS CREEK | Iowa | Poor | 1914 | 10.7 m | 719 |
| POLLY CREEK | Iowa | Fair | 1955 | 12.2 m | 718 |
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.