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 |
|---|---|---|---|---|---|
| WILLOW CREEK | Iowa | Fair | 1920 | 19.5 m | 5,897 |
| INDIAN CREEK | Iowa | Good | 2023 | 9.1 m | 5,896 |
| WANATEE CREEK | Iowa | Good | 2001 | 39.0 m | 5,894 |
| NB/WB RAMP I-380 | Iowa | Fair | 1980 | 84.7 m | 5,850 |
| IOWA RIVER EAST OVERFLOW | Iowa | Good | 2020 | 46.6 m | 5,850 |
| IOWA RIVER | Iowa | Good | 2005 | 165.8 m | 5,850 |
| PONY CREEK | Iowa | Fair | 1973 | 52.4 m | 5,850 |
| PONY CREEK | Iowa | Fair | 1973 | 52.4 m | 5,850 |
| NB/WB RAMP I-380 | Iowa | Fair | 1980 | 84.7 m | 5,850 |
| BREWERS CREEK | Iowa | Fair | 1923 | 40.8 m | 5,839 |
| SKUNK RIVER | Iowa | Good | 1996 | 50.9 m | 5,834 |
| MUDDY CREEK | Iowa | Good | 1996 | 50.3 m | 5,803 |
| WALNUT CREEK | Iowa | Good | 1993 | 29.9 m | 5,800 |
| HARROWS CREEK | Iowa | Good | 1977 | 7.9 m | 5,800 |
| DES MOINES RIVER | Iowa | Good | 2006 | 445.0 m | 5,800 |
| OVER CC RR | Iowa | Fair | 1968 | 142.6 m | 5,800 |
| WALNUT CREEK | Iowa | Good | 1974 | 29.9 m | 5,800 |
| US 18 | Iowa | Good | 1996 | 71.3 m | 5,800 |
| INDIAN CREEK | Iowa | Fair | 1972 | 64.6 m | 5,800 |
| MIDDLE CHEQUEST CREEK | Iowa | Fair | 1963 | 46.9 m | 5,800 |
| US 34 | Iowa | Fair | 1970 | 43.9 m | 5,800 |
| CHRISTOPHER CREEK | Iowa | Good | 1985 | 6.7 m | 5,794 |
| INDIAN CREEK | Iowa | Good | 1993 | 39.0 m | 5,794 |
| FOUR MILE CREEK | Iowa | Fair | 1966 | 51.2 m | 5,776 |
| SOLDIER CREEK & TRAIL | Iowa | Poor | 1961 | 279.8 m | 5,768 |
| BNSF RR | Iowa | Good | 1977 | 58.8 m | 5,750 |
| OLD FERRY RD | Iowa | Good | 2016 | 72.8 m | 5,750 |
| BNSF RR | Iowa | Fair | 1977 | 58.8 m | 5,750 |
| USHERS FERRY RD & CK | Iowa | Good | 2016 | 96.0 m | 5,750 |
| S. FORK LONG CREEK | Iowa | Fair | 1997 | 41.8 m | 5,750 |
| I-235 | Iowa | Good | 2005 | 82.6 m | 5,745 |
| PERRY CREEK CONDUIT | Iowa | Good | 2000 | 15.2 m | 5,704 |
| PONY CREEK | Iowa | Fair | 1953 | 9.8 m | 5,700 |
| OLD FERRY RD | Iowa | Good | 2016 | 72.8 m | 5,700 |
| STREAM | Iowa | Good | 1958 | 6.4 m | 5,700 |
| OVER CC RR & MCCLOUD RUN | Iowa | Fair | 1980 | 88.4 m | 5,700 |
| IA 17 | Iowa | Good | 1974 | 78.3 m | 5,700 |
| USHERS FERRY RD & CK | Iowa | Good | 2016 | 96.0 m | 5,700 |
| STREAM | Iowa | Fair | 1953 | 7.0 m | 5,700 |
| SILVER CREEK | Iowa | Poor | 1955 | 64.6 m | 5,696 |
| POYNER CREEK | Iowa | Fair | 1959 | 15.2 m | 5,694 |
| FLOYD RIVER | Iowa | Fair | 1999 | 239.0 m | 5,650 |
| FLOYD RIVER | Iowa | Fair | 2000 | 239.0 m | 5,650 |
| INDIAN CREEK | Iowa | Fair | 2002 | 67.4 m | 5,650 |
| MIDDLE RIVER | Iowa | Fair | 1966 | 108.5 m | 5,650 |
| INDIAN CREEK | Iowa | Fair | 1932 | 66.1 m | 5,650 |
| S FK LONG CREEK | Iowa | Good | 1997 | 41.1 m | 5,650 |
| MIDDLE RIVER | Iowa | Good | 1997 | 114.6 m | 5,650 |
| FOUR MILE CREEK | Iowa | Fair | 1982 | 49.7 m | 5,650 |
| I-35 | Iowa | Fair | 1966 | 66.4 m | 5,642 |
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.