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 |
|---|---|---|---|---|---|
| THUNDER CREEK | Iowa | Good | 1999 | 34.1 m | 1,770 |
| SOUTH FOX CREEK | Iowa | Good | 2011 | 10.3 m | 1,770 |
| SO FORK IOWA RIVER | Iowa | Good | 1981 | 78.0 m | 1,770 |
| GRANGER CREEK | Iowa | Good | 2019 | 11.8 m | 1,770 |
| E BR WAPSINONOC CREEK | Iowa | Poor | 1920 | 18.3 m | 1,770 |
| GOSHEN DITCH | Iowa | Fair | 1981 | 22.3 m | 1,770 |
| CEDAR RIVER | Iowa | Fair | 1972 | 315.8 m | 1,770 |
| SUGAR CREEK | Iowa | Fair | 1973 | 64.9 m | 1,770 |
| MUD CREEK | Iowa | Good | 2023 | 37.5 m | 1,770 |
| HEATON CREEK | Iowa | Good | 2018 | 31.4 m | 1,768 |
| BEAVER CREEK | Iowa | Fair | 1984 | 90.5 m | 1,760 |
| INDIAN CREEK | Iowa | Fair | 1959 | 86.6 m | 1,760 |
| SPRING CREEK | Iowa | Fair | 1960 | 56.1 m | 1,760 |
| EAST NISHNABOTNA RIVER | Iowa | Fair | 1961 | 117.7 m | 1,760 |
| LITTLE WAPSIPINICON RVR | Iowa | Good | 1989 | 53.3 m | 1,760 |
| GYPSUM MINE HAUL RD | Iowa | Good | 2017 | 33.5 m | 1,760 |
| SO.FORK ENGLISH RIVER | Iowa | Fair | 1987 | 67.4 m | 1,760 |
| DRY CREEK | Iowa | Poor | 1972 | 30.5 m | 1,755 |
| E BLUE CREEK | Iowa | Fair | 1995 | 10.7 m | 1,753 |
| ROCK CREEK | Iowa | Good | 1981 | 50.0 m | 1,752 |
| MASON CREEK | Iowa | Good | 2011 | 50.8 m | 1,750 |
| OTTER CREEK | Iowa | Good | 1989 | 42.1 m | 1,750 |
| WALNUT CREEK | Iowa | Good | 1988 | 40.5 m | 1,750 |
| EAST FORK GRAND RIVER | Iowa | Fair | 1985 | 48.5 m | 1,750 |
| LOTTS CREEK | Iowa | Good | 1985 | 37.5 m | 1,750 |
| U.S. 20 | Iowa | Good | 1980 | 81.7 m | 1,748 |
| DES MOINES RIVER | Iowa | Good | 1995 | 145.1 m | 1,746 |
| BREWERS CREEK | Iowa | Good | 1995 | 23.8 m | 1,745 |
| STREAM | Iowa | Good | 1994 | 9.1 m | 1,740 |
| STREAM | Iowa | Fair | 1994 | 42.4 m | 1,740 |
| COLD WATER CREEK | Iowa | Good | 2010 | 67.4 m | 1,740 |
| BRANCH PONY CREEK | Iowa | Good | 1975 | 6.7 m | 1,740 |
| DRAINAGE DITCH #2 | Iowa | Good | 2019 | 39.9 m | 1,740 |
| DRAINAGE DITCH #94 | Iowa | Good | 2019 | 33.8 m | 1,740 |
| BALES BRANCH CR. | Iowa | Good | 1983 | 8.7 m | 1,738 |
| UP RR | Iowa | Fair | 2008 | 88.1 m | 1,738 |
| MAQUOKETA RIVER | Iowa | Fair | 1987 | 38.1 m | 1,738 |
| LYNN CREEK | Iowa | Good | 2008 | 64.9 m | 1,738 |
| US 75 | Iowa | Fair | 1998 | 92.4 m | 1,735 |
| US 18 | Iowa | Good | 2004 | 76.8 m | 1,735 |
| U.S. 18 | Iowa | Good | 2004 | 76.8 m | 1,735 |
| PONY CREEK | Iowa | Poor | 1966 | 61.0 m | 1,733 |
| SO FK MAQUOKETA RIVER | Iowa | Good | 1999 | 98.8 m | 1,730 |
| LITTLE WAPSIPINICON RVR | Iowa | Fair | 1959 | 43.6 m | 1,730 |
| OTTER CREEK | Iowa | Fair | 1922 | 25.3 m | 1,730 |
| DRAINAGE DITCH | Iowa | Good | 1984 | 6.4 m | 1,730 |
| STREAM | Iowa | Fair | 1962 | 7.3 m | 1,730 |
| NORTH ENGLISH RIVER | Iowa | Fair | 1962 | 55.8 m | 1,730 |
| STREAM | Iowa | Fair | 1938 | 6.4 m | 1,730 |
| WALNUT CREEK | Iowa | Fair | 1985 | 39.0 m | 1,730 |
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.