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 |
|---|---|---|---|---|---|
| OVER ABANDON RR | Iowa | Good | 1973 | 36.0 m | 1,561 |
| TRIB TO ELK RUN CREEK | Iowa | Good | 1996 | 15.9 m | 1,561 |
| BRUCE CREEK | Iowa | Fair | 1955 | 12.2 m | 1,560 |
| RACCOON RIVER | Iowa | Fair | 1980 | 89.6 m | 1,560 |
| PRAIRIE CREEK | Iowa | Fair | 1980 | 25.3 m | 1,560 |
| UPPER IOWA RIVER | Iowa | Good | 1990 | 79.6 m | 1,560 |
| STREAM | Iowa | Good | 1990 | 11.6 m | 1,560 |
| STREAM | Iowa | Fair | 1995 | 40.8 m | 1,560 |
| STREAM | Iowa | Fair | 1960 | 10.7 m | 1,560 |
| STREAM | Iowa | Fair | 1984 | 36.6 m | 1,560 |
| STREAM | Iowa | Fair | 1967 | 9.8 m | 1,560 |
| DRAINAGE | Iowa | Good | 2001 | 8.8 m | 1,560 |
| LAKE CREEK | Iowa | Fair | 1980 | 40.5 m | 1,560 |
| STREAM | Iowa | Good | 2015 | 12.8 m | 1,560 |
| DEVILS RUN CREEK | Iowa | Good | 2015 | 8.2 m | 1,560 |
| INDIAN CREEK | Iowa | Good | 2006 | 26.5 m | 1,555 |
| E FORK LOTTS CREEK | Iowa | Good | 1985 | 26.8 m | 1,550 |
| OVER UP RR | Iowa | Fair | 1957 | 92.4 m | 1,550 |
| PRATT CREEK | Iowa | Good | 2010 | 43.7 m | 1,550 |
| WALNUT CREEK | Iowa | Fair | 1977 | 61.3 m | 1,550 |
| DRAINAGE DITCH | Iowa | Good | 1976 | 11.9 m | 1,550 |
| BRANCH MIDDLE CREEK | Iowa | Fair | 1961 | 9.1 m | 1,550 |
| MIDDLE CREEK | Iowa | Fair | 1962 | 6.4 m | 1,550 |
| LITTLE SIOUX RIVER | Iowa | Fair | 1982 | 154.5 m | 1,547 |
| SPRING CREEK | Iowa | Fair | 1984 | 6.4 m | 1,547 |
| STREAM | Iowa | Poor | 1970 | 76.8 m | 1,544 |
| RED OAK CREEK | Iowa | Fair | 1965 | 12.2 m | 1,543 |
| CEDAR RIVER | Iowa | Fair | 2012 | 160.3 m | 1,542 |
| WOLF CREEK | Iowa | Good | 2012 | 110.9 m | 1,542 |
| MAQUOKETA RIVER | Iowa | Good | 2011 | 39.6 m | 1,540 |
| UPPER IOWA RIVER | Iowa | Good | 1997 | 79.6 m | 1,540 |
| ENTERPRISE CREEK | Iowa | Good | 1995 | 54.6 m | 1,540 |
| BEAVER CREEK | Iowa | Fair | 1977 | 15.2 m | 1,540 |
| INDIAN CREEK | Iowa | Fair | 1935 | 8.8 m | 1,540 |
| NATURAL STREAM | Iowa | Fair | 1951 | 6.7 m | 1,540 |
| HAYES LAKE | Iowa | Good | 1998 | 90.5 m | 1,540 |
| MARVEL CREEK | Iowa | Good | 2020 | 40.6 m | 1,540 |
| HICKORY CREEK | Iowa | Good | 1993 | 31.4 m | 1,540 |
| EAST OTTER CREEK | Iowa | Fair | 1951 | 37.8 m | 1,540 |
| WHITE BREAST CREEK | Iowa | Fair | 1974 | 37.5 m | 1,540 |
| I-35 & IA #5 RAMP C | Iowa | Good | 2000 | 252.1 m | 1,540 |
| SMALL NATURAL STREAM | Iowa | Fair | 1926 | 6.4 m | 1,534 |
| LITTLE BEAVER CREEK | Iowa | Good | 2017 | 8.0 m | 1,534 |
| INDIAN CREEK | Iowa | Fair | 1987 | 10.7 m | 1,534 |
| MUD CREEK | Iowa | Fair | 1992 | 46.9 m | 1,532 |
| POYNER CREEK | Iowa | Fair | 1955 | 17.6 m | 1,532 |
| TRIB TO INDIAN CREEK | Iowa | Poor | 1957 | 7.6 m | 1,532 |
| STREAM | Iowa | Good | 2020 | 10.7 m | 1,532 |
| FOUR MILE CREEK | Iowa | Good | 1991 | 61.3 m | 1,532 |
| CEDAR RIVER | Iowa | Good | 2023 | 152.7 m | 1,531 |
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.