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 |
|---|---|---|---|---|---|
| E FORK GRAND RIVER | Iowa | Fair | 2003 | 54.6 m | 338 |
| OTTER CREEK | Iowa | Good | 2017 | 62.2 m | 338 |
| TARKIO CK | Iowa | Fair | 1977 | 7.6 m | 338 |
| CREEK | Iowa | Fair | 1958 | 55.8 m | 338 |
| CREEK | Iowa | Fair | 1972 | 8.2 m | 338 |
| NODAWAY RIVER | Iowa | Fair | 2000 | 62.5 m | 338 |
| ROCK RIVER | Iowa | Poor | 1968 | 76.8 m | 337 |
| OTTER CREEK | Iowa | Good | 2011 | 37.5 m | 337 |
| STREAM | Iowa | Fair | 1963 | 12.8 m | 336 |
| ELK CREEK | Iowa | Good | 2008 | 8.2 m | 335 |
| ALLEN CREEK | Iowa | Poor | 1969 | 12.2 m | 335 |
| SMALL STREAM | Iowa | Good | 2006 | 23.8 m | 334 |
| ROBINSON CREEK | Iowa | Good | 2008 | 34.4 m | 334 |
| BEAVER CREEK | Iowa | Poor | 1967 | 30.8 m | 334 |
| SMALL STREAM | Iowa | Good | 2008 | 9.1 m | 334 |
| TRIB TO CEDAR RIVER | Iowa | Fair | 1978 | 8.8 m | 334 |
| STREAM | Iowa | Fair | 1972 | 23.8 m | 334 |
| PRATT CREEK | Iowa | Good | 2015 | 7.9 m | 334 |
| BRANCH INDIAN CREEK | Iowa | Fair | 1984 | 6.1 m | 334 |
| BUCK CREEK | Iowa | Fair | 1972 | 53.6 m | 334 |
| E BR BEAVER DAM CREEK | Iowa | Good | 1980 | 15.9 m | 334 |
| E BR BEAVER DAM CREEK | Iowa | Good | 1983 | 15.9 m | 334 |
| INDIAN CREEK | Iowa | Good | 1984 | 22.9 m | 334 |
| TIPTON CREEK | Iowa | Poor | 1900 | 19.2 m | 334 |
| SPRING CREEK | Iowa | Good | 2015 | 6.7 m | 334 |
| ROBINSON CREEK | Iowa | Good | 2021 | 34.4 m | 334 |
| W BR BUFFALO CREEK | Iowa | Fair | 1974 | 39.0 m | 334 |
| W BR BUFFALO CREEK | Iowa | Good | 2004 | 34.4 m | 334 |
| SUGAR CREEK | Iowa | Good | 2004 | 11.6 m | 333 |
| CREEK | Iowa | Fair | 1998 | 34.7 m | 330 |
| WHITE FOX CREEK | Iowa | Fair | 1960 | 39.0 m | 330 |
| SNYDER CREEK | Iowa | Fair | 1982 | 7.9 m | 330 |
| SMALL STREAM | Iowa | Fair | 1977 | 7.0 m | 330 |
| SMALL STREAM | Iowa | Poor | 1990 | 14.9 m | 330 |
| BRANCH BEAR CREEK | Iowa | Fair | 1962 | 7.0 m | 330 |
| STREAM | Iowa | Fair | 1950 | 9.0 m | 330 |
| CREEK | Iowa | Fair | 1971 | 6.7 m | 330 |
| RALSTON CREEK | Iowa | Poor | 1957 | 6.7 m | 330 |
| BOONE RIVER | Iowa | Fair | 1948 | 16.8 m | 330 |
| MAQUOKETA RIVER | Iowa | Poor | 1950 | 134.1 m | 330 |
| WOLF CREEK | Iowa | Good | 2009 | 50.9 m | 330 |
| DD #121 | Iowa | Good | 1998 | 7.6 m | 330 |
| STREAM | Iowa | Good | 2008 | 7.6 m | 330 |
| DRY RUN CREEK | Iowa | Good | 2016 | 11.4 m | 330 |
| INLET BLACKHAWK LK | Iowa | Fair | 1989 | 23.8 m | 330 |
| WOLF CREEK | Iowa | Poor | 1958 | 43.9 m | 330 |
| SOUTH AVERY CREEK | Iowa | Good | 2004 | 46.9 m | 330 |
| SUGAR CREEK | Iowa | Fair | 1958 | 31.4 m | 330 |
| KEG CREEK | Iowa | Good | 2018 | 40.5 m | 330 |
| STREAM | Iowa | Good | 2022 | 10.7 m | 330 |
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.