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 |
|---|---|---|---|---|---|
| SNAKE CREEK | Iowa | Good | 1987 | 7.6 m | 1,690 |
| BRANCH MAQUOKETA RIVER | Iowa | Fair | 1931 | 9.7 m | 1,690 |
| EASTER LAKE | Iowa | Good | 2018 | 34.4 m | 1,686 |
| COAL CREEK | Iowa | Fair | 1979 | 40.5 m | 1,680 |
| GOOSE CREEK | Iowa | Fair | 1900 | 14.0 m | 1,680 |
| UNNAMED STREAM | Iowa | Good | 2016 | 7.8 m | 1,680 |
| BRANCH MAQUOKETA RIVER | Iowa | Fair | 1931 | 7.9 m | 1,680 |
| N FORK LITTLE MAQUOKETA | Iowa | Fair | 1967 | 46.9 m | 1,680 |
| BEEDS CREEK | Iowa | Fair | 1929 | 19.2 m | 1,680 |
| CROW CREEK | Iowa | Fair | 1954 | 15.9 m | 1,680 |
| STREAM | Iowa | Good | 2002 | 7.6 m | 1,680 |
| NEOLA CREEK | Iowa | Fair | 1928 | 13.1 m | 1,676 |
| SPENCER CREEK TRIB | Iowa | Good | 2021 | 29.9 m | 1,676 |
| STREAM | Iowa | Poor | 1952 | 7.3 m | 1,676 |
| WILLOW CREEK | Iowa | Good | 2020 | 27.4 m | 1,676 |
| PERRY CREEK | Iowa | Fair | 1950 | 41.8 m | 1,675 |
| CREEK | Iowa | Good | 2001 | 7.0 m | 1,673 |
| DRAINAGE DITCH | Iowa | Fair | 2003 | 11.0 m | 1,670 |
| BIG CREEK | Iowa | Fair | 1984 | 58.5 m | 1,669 |
| ALLEN CREEK | Iowa | Fair | 1974 | 7.3 m | 1,669 |
| ABBEY CREEK | Iowa | Fair | 1974 | 37.5 m | 1,669 |
| US 61 | Iowa | Good | 2000 | 68.3 m | 1,666 |
| BACON CREEK | Iowa | Poor | 1900 | 6.4 m | 1,664 |
| RALSTON CREEK | Iowa | Good | 2020 | 12.3 m | 1,664 |
| SMALL STREAM | Iowa | Fair | 1953 | 11.0 m | 1,664 |
| STREAM | Iowa | Good | 2012 | 11.6 m | 1,661 |
| RED ROCK CREEK | Iowa | Good | 1987 | 29.9 m | 1,660 |
| ROCK CREEK | Iowa | Poor | 1967 | 32.6 m | 1,660 |
| ROCK CREEK | Iowa | Good | 1996 | 42.4 m | 1,660 |
| INDIAN CREEK | Iowa | Good | 2003 | 59.1 m | 1,660 |
| SIMMONS CREEK | Iowa | Good | 1989 | 35.7 m | 1,660 |
| US 30 | Iowa | Good | 1969 | 65.8 m | 1,660 |
| BIG CREEK | Iowa | Good | 2005 | 46.6 m | 1,660 |
| PRAIRIE CREEK | Iowa | Fair | 1960 | 55.8 m | 1,660 |
| MUD CREEK | Iowa | Good | 2017 | 32.9 m | 1,660 |
| TRIB TO MILLER CREEK | Iowa | Fair | 1994 | 31.4 m | 1,660 |
| TRIB TO MILLER CREEK | Iowa | Fair | 1994 | 27.7 m | 1,660 |
| MILLER CREEK | Iowa | Good | 2004 | 40.5 m | 1,660 |
| FLOYD RIVER | Iowa | Fair | 1962 | 101.2 m | 1,656 |
| I 80 | Iowa | Poor | 1959 | 69.2 m | 1,654 |
| I-80 | Iowa | Fair | 1958 | 77.4 m | 1,654 |
| N FORK MAQUOKETA RIVER | Iowa | Poor | 1967 | 38.1 m | 1,651 |
| FOUR MILE CREEK | Iowa | Fair | 1980 | 75.6 m | 1,651 |
| US 61 | Iowa | Good | 2011 | 74.7 m | 1,650 |
| SMALL NATURAL STREAM | Iowa | Fair | 1949 | 12.2 m | 1,650 |
| DRAINAGE DITCH | Iowa | Fair | 1966 | 6.3 m | 1,650 |
| SMALL CREEK | Iowa | Fair | 1998 | 34.4 m | 1,650 |
| SPRING CREEK | Iowa | Good | 2014 | 42.9 m | 1,650 |
| PIKE RUN CREEK | Iowa | Fair | 1968 | 37.8 m | 1,650 |
| SMALL CREEK | Iowa | Fair | 1998 | 7.9 m | 1,650 |
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.