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 |
|---|---|---|---|---|---|
| SNYDER CREEK | Iowa | Fair | 1987 | 39.0 m | 381 |
| SOAP CREEK | Iowa | Fair | 1987 | 65.2 m | 380 |
| WILLIAMS CREEK | Iowa | Fair | 1980 | 38.4 m | 380 |
| SMALL STREAM | Iowa | Good | 2013 | 7.3 m | 380 |
| SWEETLAND CREEK | Iowa | Fair | 1948 | 6.1 m | 380 |
| LOWE RUN | Iowa | Poor | 1928 | 7.6 m | 380 |
| SMALL DRY RUN | Iowa | Poor | 1920 | 16.3 m | 380 |
| BR CEDAR CREEK | Iowa | Good | 2012 | 19.2 m | 380 |
| CEDAR CREEK | Iowa | Good | 2014 | 31.4 m | 380 |
| FARMERS CREEK | Iowa | Fair | 1990 | 6.4 m | 380 |
| FARMERS CREEK | Iowa | Fair | 1979 | 6.4 m | 380 |
| N FORK MAQUOKETA RIVER | Iowa | Good | 2024 | 25.3 m | 380 |
| GRAND RIVER | Iowa | Poor | 1940 | 55.8 m | 379 |
| DRAINAGE DITCH | Iowa | Fair | 1960 | 8.5 m | 379 |
| CREEK | Iowa | Good | 1977 | 7.6 m | 379 |
| DRAINAGE DITCH | Iowa | Fair | 1955 | 6.4 m | 379 |
| OVERFLW OF PILOT CREEK | Iowa | Fair | 1995 | 8.5 m | 379 |
| WRIGHT CREEK | Iowa | Fair | 1968 | 39.0 m | 379 |
| WELDON RIVER | Iowa | Poor | 1958 | 77.4 m | 379 |
| CALEB CREEK | Iowa | Fair | 1977 | 43.3 m | 379 |
| CREEK | Iowa | Poor | 1962 | 6.4 m | 379 |
| SIX MILE CREEK | Iowa | Good | 1971 | 46.3 m | 379 |
| S LIZARD CK DD #22 | Iowa | Good | 2000 | 31.4 m | 379 |
| DEER CREEK | Iowa | Poor | 1968 | 23.5 m | 379 |
| PILOT CREEK | Iowa | Fair | 1969 | 31.4 m | 379 |
| DRAINAGE DITCH | Iowa | Good | 2006 | 36.0 m | 379 |
| BIG CEDAR CK DD #41 | Iowa | Poor | 1969 | 9.8 m | 379 |
| DRAINAGE DITCH 9-13 | Iowa | Poor | 1970 | 13.7 m | 379 |
| STREAM | Iowa | Fair | 2005 | 7.6 m | 379 |
| WATERWAY | Iowa | Poor | 1900 | 7.6 m | 379 |
| CREEK | Iowa | Fair | 1966 | 17.4 m | 379 |
| UNNAMED STREAM | Iowa | Poor | 1961 | 23.8 m | 379 |
| SMALL | Iowa | Poor | 1900 | 6.4 m | 379 |
| THREE MILE CREEK | Iowa | Good | 2003 | 11.0 m | 379 |
| PLATTE RIVER | Iowa | Fair | 1969 | 62.2 m | 379 |
| FIELD STREAM | Iowa | Fair | 1985 | 28.0 m | 379 |
| UNNAMED CREEK | Iowa | Poor | 1961 | 23.5 m | 379 |
| WILLOW CREEK | Iowa | Fair | 1990 | 39.0 m | 379 |
| WILLOW CREEK | Iowa | Fair | 1970 | 32.0 m | 379 |
| RACCOON RIVER | Iowa | Good | 2017 | 108.1 m | 379 |
| ALLEN CREEK | Iowa | Good | 2021 | 28.3 m | 379 |
| HARRIS GROVE CREEK | Iowa | Fair | 1900 | 8.8 m | 379 |
| BROWN CREEK (DD#121) | Iowa | Fair | 1971 | 23.8 m | 379 |
| BREWER CREEK | Iowa | Fair | 1920 | 13.7 m | 377 |
| RAILROAD CREEK | Iowa | Poor | 1900 | 13.1 m | 377 |
| SO BR RALSTON CREEK | Iowa | Fair | 1997 | 8.2 m | 377 |
| BLACKHAWK CREEK | Iowa | Fair | 1985 | 21.0 m | 377 |
| THOMAS DITCH | Iowa | Fair | 1957 | 13.4 m | 377 |
| LINDNER CREEK | Iowa | Poor | 1969 | 23.9 m | 376 |
| I-80 | Iowa | Fair | 1959 | 67.1 m | 374 |
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.