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 |
|---|---|---|---|---|---|
| APPLE CREEK | Iowa | Fair | 1935 | 12.8 m | 1,070 |
| STREAM | Iowa | Fair | 1956 | 25.0 m | 1,070 |
| STREAM | Iowa | Fair | 1956 | 31.1 m | 1,070 |
| STREAM | Iowa | Good | 2001 | 12.2 m | 1,070 |
| S COPPER CREEK | Iowa | Poor | 1974 | 16.8 m | 1,070 |
| COPPER CREEK | Iowa | Fair | 1974 | 13.1 m | 1,070 |
| LITTLE CEDAR CREEK | Iowa | Good | 2015 | 11.3 m | 1,070 |
| PRAIRIE CREEK | Iowa | Good | 2013 | 11.6 m | 1,070 |
| PRAIRIE CREEK | Iowa | Good | 2013 | 9.8 m | 1,070 |
| SMALL NATURAL STREAM | Iowa | Poor | 1967 | 28.0 m | 1,070 |
| CREEK | Iowa | Fair | 1964 | 7.3 m | 1,070 |
| BRANCH BOYER RIVER | Iowa | Good | 1984 | 7.6 m | 1,070 |
| BOYER RIVER | Iowa | Fair | 1984 | 58.2 m | 1,070 |
| E BIG CREEK | Iowa | Fair | 1986 | 39.6 m | 1,069 |
| CROOKED CREEK | Iowa | Fair | 1982 | 9.1 m | 1,067 |
| FOUR MILE CREEK TRIBUTAR | Iowa | Good | 1986 | 49.7 m | 1,066 |
| DRAINAGE DITCH | Iowa | Fair | 1976 | 22.3 m | 1,065 |
| BOYER RIVER | Iowa | Fair | 1991 | 89.6 m | 1,065 |
| DRAINAGE DITCH | Iowa | Good | 1991 | 22.6 m | 1,065 |
| BOONE RIVER | Iowa | Fair | 1954 | 104.5 m | 1,065 |
| SILVER CREEK | Iowa | Good | 2006 | 53.6 m | 1,065 |
| KEG CREEK | Iowa | Poor | 1967 | 54.0 m | 1,065 |
| BURNETT CREEK | Iowa | Fair | 1985 | 46.9 m | 1,061 |
| PLEASANT RUN | Iowa | Fair | 1997 | 27.7 m | 1,061 |
| BR ROBINSON CREEK | Iowa | Poor | 1922 | 7.3 m | 1,061 |
| IOWA RIVER | Iowa | Fair | 1981 | 87.8 m | 1,061 |
| WILLOW CREEK | Iowa | Fair | 1970 | 11.6 m | 1,061 |
| CRANE CREEK | Iowa | Fair | 1971 | 13.7 m | 1,061 |
| LOST CREEK | Iowa | Good | 1985 | 46.6 m | 1,060 |
| OVERFLOW STRUCTURE | Iowa | Good | 2014 | 11.9 m | 1,060 |
| WALNUT CREEK | Iowa | Poor | 1949 | 31.7 m | 1,060 |
| CREEK | Iowa | Poor | 1923 | 10.1 m | 1,060 |
| WALNUT CREEK | Iowa | Poor | 1973 | 84.1 m | 1,060 |
| WEST ROCK CREEK | Iowa | Good | 2005 | 38.1 m | 1,060 |
| SEVENMILE CREEK | Iowa | Good | 2023 | 69.2 m | 1,060 |
| WATERMAN CREEK | Iowa | Fair | 1937 | 37.2 m | 1,057 |
| IA 5 | Iowa | Good | 2000 | 248.1 m | 1,055 |
| CLANTON CREEK | Iowa | Fair | 1995 | 66.1 m | 1,055 |
| MIDDLE PLATTE RIVER | Iowa | Good | 2005 | 39.3 m | 1,055 |
| DRAINAGE | Iowa | Poor | 1915 | 6.7 m | 1,054 |
| DRAINAGE DITCH | Iowa | Poor | 1927 | 8.8 m | 1,051 |
| DRAINAGE DITCH | Iowa | Fair | 1976 | 9.8 m | 1,051 |
| CREEK | Iowa | Fair | 2001 | 7.3 m | 1,051 |
| BR BLACKHAWK CK | Iowa | Fair | 1977 | 6.7 m | 1,051 |
| DRAINAGE DITCH | Iowa | Fair | 1978 | 25.3 m | 1,050 |
| OVERFLOW IOWA RIVER | Iowa | Fair | 1978 | 128.9 m | 1,050 |
| US 34 | Iowa | Good | 2006 | 113.7 m | 1,050 |
| SEVEN MILE CREEK | Iowa | Good | 2002 | 74.7 m | 1,050 |
| DRAINAGE DITCH | Iowa | Fair | 1976 | 8.2 m | 1,050 |
| MILL RACE | Iowa | Fair | 1976 | 40.5 m | 1,050 |
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.