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 |
|---|---|---|---|---|---|
| NORTH ENGLISH RIVER | Iowa | Fair | 1962 | 55.8 m | 1,730 |
| STREAM | Iowa | Fair | 1962 | 7.3 m | 1,730 |
| DEEP RIVER | Iowa | Good | 1962 | 50.6 m | 1,730 |
| DRAINAGE DITCH | Iowa | Good | 1984 | 6.4 m | 1,730 |
| OTTER CREEK | Iowa | Fair | 1922 | 25.3 m | 1,730 |
| LITTLE WAPSIPINICON RVR | Iowa | Fair | 1959 | 43.6 m | 1,730 |
| HOOSIER CREEK | Iowa | Fair | 1985 | 28.0 m | 1,728 |
| FLOYD RIVER | Iowa | Fair | 1964 | 118.0 m | 1,723 |
| I-235 | Iowa | Good | 2001 | 129.8 m | 1,723 |
| STREAM | Iowa | Good | 2000 | 6.4 m | 1,721 |
| STREAM | Iowa | Good | 1927 | 6.4 m | 1,720 |
| MCGRUDER CREEK | Iowa | Fair | 1984 | 25.3 m | 1,720 |
| RACCOON RIVER | Iowa | Good | 2015 | 82.6 m | 1,720 |
| SOLDIER RIVER | Iowa | Good | 2019 | 46.0 m | 1,720 |
| BRANCH SOLDIER RIVER | Iowa | Fair | 1947 | 10.7 m | 1,720 |
| W FORK CROOKED CREEK | Iowa | Good | 2002 | 87.2 m | 1,720 |
| ODEBOLT CREEK | Iowa | Fair | 1947 | 47.2 m | 1,720 |
| GREY CREEK OVERFLOW | Iowa | Fair | 1986 | 20.1 m | 1,720 |
| DRAINAGE DITCH | Iowa | Good | 1979 | 7.6 m | 1,720 |
| GREY CREEK | Iowa | Good | 1986 | 37.5 m | 1,720 |
| GREY CREEK | Iowa | Fair | 1986 | 28.3 m | 1,720 |
| GREY CREEK | Iowa | Fair | 1986 | 25.3 m | 1,720 |
| STREAM | Iowa | Good | 1979 | 11.6 m | 1,720 |
| CROOKED CREEK | Iowa | Fair | 1940 | 98.5 m | 1,720 |
| LITTLE BEAVER CREEK | Iowa | Fair | 1976 | 28.3 m | 1,720 |
| CEDAR CREEK | Iowa | Good | 2015 | 81.4 m | 1,720 |
| N FORK MAQUOKETA RIVER | Iowa | Fair | 1968 | 31.4 m | 1,720 |
| SMALL STREAM | Iowa | Good | 2003 | 46.9 m | 1,719 |
| UNNAMED CR TO VOLGA CR | Iowa | Good | 1989 | 6.7 m | 1,719 |
| LITTLE VOLGA | Iowa | Good | 1998 | 7.9 m | 1,719 |
| E FORK DES MOINES RIVER | Iowa | Good | 2020 | 75.1 m | 1,716 |
| NORTH RIVER | Iowa | Poor | 1960 | 77.4 m | 1,714 |
| STREAM | Iowa | Fair | 1936 | 6.1 m | 1,714 |
| BR BADGER CREEK | Iowa | Poor | 1970 | 13.4 m | 1,714 |
| KEG CREEK | Iowa | Good | 2009 | 57.5 m | 1,704 |
| STREAM | Iowa | Good | 2020 | 43.6 m | 1,701 |
| STREAM | Iowa | Good | 2011 | 11.0 m | 1,700 |
| ROBERTS CREEK | Iowa | Good | 1972 | 6.4 m | 1,700 |
| SPENCER CREEK | Iowa | Poor | 1972 | 20.4 m | 1,700 |
| STREAM | Iowa | Good | 2001 | 9.1 m | 1,700 |
| I-35 | Iowa | Fair | 1970 | 88.7 m | 1,700 |
| PRESCOTTS CREEK | Iowa | Good | 1993 | 51.2 m | 1,699 |
| I 29 | Iowa | Fair | 2014 | 109.3 m | 1,699 |
| PERRY CREEK | Iowa | Good | 2016 | 42.7 m | 1,699 |
| IOWA RIVER | Iowa | Fair | 1922 | 54.9 m | 1,698 |
| BOONE RIVER | Iowa | Fair | 1954 | 104.9 m | 1,695 |
| SMALL NATURAL STREAM | Iowa | Fair | 1958 | 10.7 m | 1,693 |
| WEST NISHNABOTNA RIVER | Iowa | Good | 2010 | 46.8 m | 1,693 |
| BRANCH MAQUOKETA RIVER | Iowa | Fair | 1931 | 9.7 m | 1,690 |
| STREAM | Iowa | Fair | 1941 | 6.4 m | 1,690 |
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.