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 |
|---|---|---|---|---|---|
| GRANGER CREEK | Iowa | Fair | 1975 | 27.7 m | 480 |
| S WYACONDAH DITCH | Iowa | Poor | 1968 | 46.0 m | 480 |
| RED OAK CREEK | Iowa | Fair | 1971 | 30.5 m | 479 |
| DRAINAGE | Iowa | Poor | 1968 | 17.7 m | 479 |
| BLUFF CREEK | Iowa | Fair | 1956 | 21.6 m | 478 |
| BOONE RIVER | Iowa | Fair | 1939 | 90.2 m | 478 |
| CREEK | Iowa | Good | 2001 | 7.3 m | 478 |
| CREEK | Iowa | Poor | 1947 | 9.1 m | 478 |
| WILLOW CREEK | Iowa | Good | 2010 | 10.1 m | 478 |
| DD #61 | Iowa | Good | 2016 | 25.3 m | 478 |
| DM RIVER | Iowa | Good | 2001 | 74.1 m | 478 |
| DRAINAGE DITCH 1&2 | Iowa | Fair | 1974 | 9.4 m | 478 |
| CAMP CREEK TRIBUTARY | Iowa | Good | 1993 | 10.7 m | 477 |
| DRAINAGE DITCH | Iowa | Good | 1992 | 8.2 m | 477 |
| TWELVE MILE CREEK | Iowa | Good | 2010 | 30.8 m | 477 |
| NISHNABOTNA RIVER | Iowa | Poor | 1949 | 111.3 m | 477 |
| BRUSHY FORK CREEK | Iowa | Good | 2008 | 37.5 m | 477 |
| HALBUR CR TRIB TO BRUSHY | Iowa | Good | 2010 | 21.6 m | 477 |
| WATERWAY | Iowa | Good | 2019 | 50.9 m | 477 |
| CLANTON CREEK | Iowa | Poor | 1932 | 6.1 m | 477 |
| TOM CREEK | Iowa | Poor | 1954 | 38.7 m | 477 |
| HOWERDON CREEK | Iowa | Poor | 1954 | 37.2 m | 477 |
| KEG CREEK | Iowa | Fair | 1960 | 46.3 m | 477 |
| NORTH RIVER | Iowa | Fair | 1949 | 66.1 m | 477 |
| MANSON BRANCH | Iowa | Good | 1989 | 16.8 m | 477 |
| DRAINAGE | Iowa | Poor | 1900 | 8.8 m | 472 |
| RAILROAD CREEK | Iowa | Poor | 1900 | 10.4 m | 472 |
| VINTON DITCH | Iowa | Fair | 1979 | 12.2 m | 472 |
| BLACKHAWK CREEK | Iowa | Good | 1984 | 20.4 m | 472 |
| VOLGA RIVER | Iowa | Fair | 1961 | 31.2 m | 471 |
| ROCK CREEK | Iowa | Fair | 2005 | 27.4 m | 471 |
| UPPER IOWA RIVER | Iowa | Good | 2005 | 92.7 m | 471 |
| RICHLAND CREEK | Iowa | Good | 1994 | 38.7 m | 471 |
| RAVEN CREEK | Iowa | Good | 2000 | 39.0 m | 471 |
| VOLGA RIVER | Iowa | Fair | 1950 | 55.8 m | 471 |
| US 20 | Iowa | Fair | 1978 | 116.1 m | 471 |
| MILLER CREEK | Iowa | Good | 1988 | 7.3 m | 471 |
| EAST OTTER CREEK | Iowa | Good | 1999 | 31.4 m | 471 |
| HUNTER CREEK | Iowa | Poor | 1950 | 10.7 m | 471 |
| I-35 | Iowa | Fair | 1972 | 96.9 m | 471 |
| SHELLROCK RIVER | Iowa | Fair | 1955 | 54.6 m | 471 |
| BR VOLGA RIVER | Iowa | Good | 2007 | 12.2 m | 471 |
| CREEK | Iowa | Good | 2018 | 9.8 m | 471 |
| CREEK | Iowa | Fair | 1957 | 17.4 m | 471 |
| SMALL STREAM | Iowa | Good | 2013 | 13.1 m | 470 |
| S-W CONN OVER EB I-880 | Iowa | Fair | 1966 | 43.6 m | 470 |
| CREEK | Iowa | Fair | 1963 | 6.7 m | 470 |
| MC CLURE CREEK | Iowa | Poor | 1970 | 31.1 m | 470 |
| BRANCH OF BEAR CREEK | Iowa | Good | 2009 | 28.3 m | 470 |
| NORTH AVERY CREEK | Iowa | Fair | 1981 | 62.2 m | 470 |
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.