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 |
|---|---|---|---|---|---|
| BRANCH BEAR CREEK | Iowa | Fair | 1962 | 7.0 m | 330 |
| SMALL STREAM | Iowa | Poor | 1990 | 14.9 m | 330 |
| SMALL STREAM | Iowa | Fair | 1977 | 7.0 m | 330 |
| WHITE FOX CREEK | Iowa | Fair | 1960 | 39.0 m | 330 |
| NORTH BUFFALO CREEK | Iowa | Good | 2007 | 31.5 m | 330 |
| CROOKED CREEK | Iowa | Fair | 1989 | 6.4 m | 330 |
| WINNEBAGO RIVER | Iowa | Fair | 1974 | 39.0 m | 330 |
| THUNDER CREEK | Iowa | Fair | 1975 | 31.4 m | 330 |
| YANKEE RUN | Iowa | Poor | 1940 | 7.6 m | 330 |
| DD #41 BIG CEDAR CK | Iowa | Poor | 1977 | 27.7 m | 330 |
| I-380 | Iowa | Fair | 1981 | 93.6 m | 330 |
| WEST TARKIO CREEK | Iowa | Poor | 1968 | 64.9 m | 329 |
| DRAINAGE DITCH 9-13 | Iowa | Good | 2005 | 28.0 m | 329 |
| NISHNABOTNA RIVER | Iowa | Good | 2015 | 118.5 m | 329 |
| MIDDLE RIVER | Iowa | Fair | 1983 | 67.1 m | 329 |
| GRAND RIVER | Iowa | Poor | 1959 | 92.1 m | 329 |
| WEST BEAVER CREEK | Iowa | Fair | 1924 | 12.8 m | 329 |
| WEST 102 RIVER | Iowa | Poor | 1962 | 62.2 m | 329 |
| WEST 102 RIVER | Iowa | Poor | 1986 | 58.5 m | 329 |
| BASSWOOD CREEK | Iowa | Good | 2010 | 7.9 m | 329 |
| STREAM | Iowa | Good | 2020 | 6.4 m | 329 |
| STREAM | Iowa | Good | 2013 | 25.3 m | 329 |
| EAST NISHNABOTNA | Iowa | Fair | 1959 | 77.1 m | 329 |
| DICKENSON BRANCH | Iowa | Fair | 1963 | 38.7 m | 329 |
| JIM CREEK | Iowa | Poor | 1971 | 23.8 m | 329 |
| MID TARKIO CREEK | Iowa | Poor | 1968 | 34.4 m | 329 |
| BEAVER CREEK | Iowa | Good | 2017 | 33.8 m | 329 |
| BASSWOOD CREEK | Iowa | Good | 2010 | 6.6 m | 329 |
| STREAM | Iowa | Fair | 1959 | 7.6 m | 329 |
| MCGRUDER CREEK | Iowa | Good | 2015 | 37.5 m | 329 |
| SOUTH RACCOON RIVER | Iowa | Poor | 1975 | 76.2 m | 329 |
| DRAINAGE | Iowa | Good | 2011 | 24.4 m | 327 |
| RIO GRANDE CREEK | Iowa | Good | 1999 | 21.6 m | 326 |
| FORK CREEK | Iowa | Poor | 1960 | 6.7 m | 326 |
| MUDDY CREEK | Iowa | Good | 2002 | 58.5 m | 325 |
| STREAM | Iowa | Poor | 1960 | 7.9 m | 325 |
| LIME CREEK | Iowa | Fair | 1990 | 54.6 m | 324 |
| STREAM | Iowa | Good | 2009 | 7.0 m | 324 |
| ROCK FALLS CREEK | Iowa | Poor | 1966 | 9.4 m | 324 |
| UPPER IOWA RIVER | Iowa | Poor | 1937 | 90.5 m | 324 |
| SMALL STREAM | Iowa | Fair | 1978 | 10.1 m | 324 |
| FORK OF MINNEHAHA CREEK | Iowa | Fair | 1986 | 31.4 m | 324 |
| IOWA RIVER | Iowa | Good | 2011 | 102.7 m | 324 |
| UPPER IOWA RIVER BRANCH | Iowa | Good | 1987 | 26.5 m | 324 |
| SMITH CREEK | Iowa | Fair | 2003 | 12.2 m | 324 |
| CEDAR RIVER | Iowa | Poor | 1968 | 316.4 m | 324 |
| CREEK | Iowa | Good | 2008 | 45.7 m | 323 |
| RED OAK CREEK | Iowa | Fair | 1955 | 18.6 m | 321 |
| DEVILS RUN | Iowa | Fair | 1975 | 11.9 m | 320 |
| DRAINAGE DITCH 11 | Iowa | Good | 2007 | 36.6 m | 320 |
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.