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 |
|---|---|---|---|---|---|
| BR SPRING CREEK | Iowa | Fair | 1978 | 7.6 m | 1,885 |
| WINNEBAGO RIVER | Iowa | Fair | 1974 | 47.9 m | 1,884 |
| 450TH STREET | Iowa | Good | 2003 | 51.5 m | 1,880 |
| 450TH STREET | Iowa | Good | 2002 | 51.5 m | 1,880 |
| DRAINAGE DITCH | Iowa | Fair | 1925 | 16.5 m | 1,880 |
| STREAM | Iowa | Good | 1928 | 6.4 m | 1,880 |
| SOUTH RACCOON RIVER | Iowa | Good | 1977 | 49.7 m | 1,880 |
| CEDAR CREEK | Iowa | Fair | 1948 | 37.2 m | 1,880 |
| GERMAN CREEK | Iowa | Fair | 1967 | 39.9 m | 1,880 |
| CREEK | Iowa | Good | 1990 | 8.2 m | 1,880 |
| CCP RAILROAD | Iowa | Good | 2023 | 47.0 m | 1,876 |
| DD #1 | Iowa | Good | 2018 | 24.1 m | 1,875 |
| MAPLE RIVER | Iowa | Fair | 1984 | 73.5 m | 1,870 |
| SHELLROCK RIVER | Iowa | Poor | 1950 | 37.8 m | 1,868 |
| CEDAR RIVER | Iowa | Fair | 1961 | 315.8 m | 1,866 |
| MCKINLEY LAKE | Iowa | Good | 2017 | 21.3 m | 1,864 |
| DRY CREEK | Iowa | Good | 1985 | 31.4 m | 1,860 |
| CEDAR RIVER | Iowa | Poor | 1966 | 252.1 m | 1,860 |
| STREAM | Iowa | Good | 1979 | 10.1 m | 1,860 |
| BIG BEAR CREEK | Iowa | Good | 1978 | 31.4 m | 1,860 |
| US 30 | Iowa | Good | 2023 | 73.2 m | 1,860 |
| IOWA RIVER | Iowa | Good | 2023 | 51.2 m | 1,858 |
| DRAINAGE | Iowa | Fair | 1985 | 8.5 m | 1,856 |
| MOSQUITO CREEK | Iowa | Good | 1977 | 40.7 m | 1,850 |
| IA 141 | Iowa | Fair | 1997 | 75.0 m | 1,850 |
| WILLOW CREEK | Iowa | Good | 2008 | 11.9 m | 1,850 |
| WEST INDIAN CREEK | Iowa | Fair | 1964 | 75.0 m | 1,850 |
| OVER UP RR | Iowa | Poor | 1935 | 44.5 m | 1,846 |
| US 34 | Iowa | Fair | 1971 | 67.4 m | 1,846 |
| I-35 | Iowa | Fair | 1966 | 66.4 m | 1,845 |
| CEDAR CREEK | Iowa | Fair | 1964 | 55.8 m | 1,840 |
| ENGLISH CREEK | Iowa | Fair | 1987 | 7.3 m | 1,840 |
| DRAINAGE | Iowa | Good | 1986 | 22.9 m | 1,838 |
| DRAINAGE DITCH | Iowa | Fair | 1950 | 19.8 m | 1,836 |
| DRAINAGE DITCH | Iowa | Fair | 1936 | 6.4 m | 1,830 |
| DRY CREEK | Iowa | Fair | 1955 | 47.2 m | 1,828 |
| 7TH WARD DITCH | Iowa | Good | 1996 | 7.9 m | 1,823 |
| N WALNUT CREEK | Iowa | Fair | 1991 | 22.9 m | 1,821 |
| ROCK CREEK | Iowa | Fair | 1981 | 6.7 m | 1,820 |
| FISHERS CREEK | Iowa | Good | 1985 | 44.5 m | 1,820 |
| HONEY CREEK | Iowa | Good | 2008 | 47.0 m | 1,820 |
| NO NAME CREEK | Iowa | Fair | 1986 | 38.1 m | 1,820 |
| STREAM | Iowa | Fair | 1988 | 7.6 m | 1,820 |
| NORTH SKUNK RIVER | Iowa | Good | 1988 | 60.0 m | 1,820 |
| NORTH CREEK | Iowa | Good | 2013 | 7.3 m | 1,820 |
| BIG BEAR CREEK | Iowa | Fair | 1978 | 44.5 m | 1,820 |
| WALNUT CREEK | Iowa | Good | 1978 | 39.3 m | 1,820 |
| STREAM | Iowa | Fair | 1937 | 6.7 m | 1,820 |
| BOYER RIVER | Iowa | Fair | 1967 | 51.8 m | 1,820 |
| US 52 | Iowa | Good | 2017 | 111.3 m | 1,817 |
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.