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 |
|---|---|---|---|---|---|
| W TRIB TO ELWOOD CREEK | Iowa | Fair | 1952 | 19.5 m | 1,000 |
| ELWOOD CREEK | Iowa | Fair | 1952 | 37.8 m | 1,000 |
| IAIS RR | Iowa | Fair | 1956 | 100.9 m | 1,000 |
| SMALL STREAM | Iowa | Good | 2002 | 6.7 m | 999 |
| COTA CREEK | Iowa | Fair | 1987 | 50.9 m | 999 |
| MUD CREEK | Iowa | Fair | 2011 | 62.2 m | 998 |
| OTTER CREEK | Iowa | Poor | 1951 | 56.4 m | 996 |
| MIDDLE RIVER | Iowa | Poor | 1959 | 47.9 m | 996 |
| FLOYD RIVER | Iowa | Good | 1975 | 77.6 m | 995 |
| WEST FORK DES MOINES R | Iowa | Fair | 1989 | 75.3 m | 995 |
| WINNEBAGO RIVER | Iowa | Fair | 1960 | 51.2 m | 992 |
| WALTON CREEK | Iowa | Good | 2023 | 33.5 m | 992 |
| TRIB. TO WAPSI RIVER | Iowa | Good | 1974 | 9.1 m | 992 |
| LIME CREEK | Iowa | Fair | 1951 | 28.0 m | 992 |
| SMALL STREAM | Iowa | Fair | 1984 | 15.9 m | 992 |
| US 30 | Iowa | Good | 1985 | 123.7 m | 990 |
| DRAINAGE DITCH | Iowa | Good | 1973 | 10.1 m | 990 |
| NS & BNSF RR | Iowa | Fair | 1967 | 62.5 m | 990 |
| TURKEY CREEK | Iowa | Fair | 1964 | 23.8 m | 990 |
| DRAINAGE | Iowa | Good | 2016 | 6.4 m | 990 |
| LITTLE MOSQUITO CREEK | Iowa | Poor | 1964 | 31.1 m | 990 |
| FOX RIVER | Iowa | Good | 2009 | 6.4 m | 990 |
| NORTH FOX CREEK | Iowa | Good | 2009 | 6.7 m | 990 |
| CEDAR RIVER | Iowa | Poor | 1966 | 321.3 m | 990 |
| DRAINAGE DITCH | Iowa | Good | 2009 | 6.4 m | 990 |
| CENTER BRANCH FOX RIVER | Iowa | Good | 2009 | 6.7 m | 990 |
| NO NAME CREEK | Iowa | Good | 1965 | 6.7 m | 988 |
| NO NAME CREEK | Iowa | Good | 2018 | 20.6 m | 988 |
| CALAMUS CREEK | Iowa | Good | 2023 | 15.9 m | 988 |
| GRANT OPEN DITCH EXT 5 | Iowa | Fair | 1977 | 16.5 m | 988 |
| OLD SKUNK RIVER TRIBUTAR | Iowa | Good | 1992 | 15.5 m | 984 |
| BUFFALO CREEK | Iowa | Good | 2002 | 65.2 m | 982 |
| TRIB TO BLACK HAWK CREEK | Iowa | Good | 1986 | 11.6 m | 982 |
| BLACK HAWK CREEK | Iowa | Fair | 1942 | 73.2 m | 982 |
| EAST OTTER CREEK | Iowa | Poor | 1962 | 9.8 m | 982 |
| STREAM | Iowa | Fair | 1965 | 14.0 m | 982 |
| SMALL STREAM | Iowa | Fair | 1968 | 7.9 m | 982 |
| PAINT CREEK | Iowa | Fair | 1986 | 59.7 m | 982 |
| STREAM | Iowa | Fair | 1968 | 6.7 m | 982 |
| BEAR CREEK | Iowa | Fair | 1955 | 84.7 m | 980 |
| US 63 | Iowa | Good | 1983 | 118.3 m | 980 |
| BR RAPID CREEK | Iowa | Fair | 1993 | 7.0 m | 980 |
| STREAM | Iowa | Fair | 1955 | 8.2 m | 980 |
| MINERAL CREEK | Iowa | Fair | 1929 | 16.4 m | 980 |
| UPPER IOWA RIVER | Iowa | Fair | 1955 | 98.1 m | 980 |
| SMALL NATURAL STREAM | Iowa | Fair | 1957 | 6.7 m | 980 |
| WALNUT CREEK | Iowa | Fair | 1958 | 36.6 m | 980 |
| RELOC US 30 | Iowa | Good | 1995 | 81.7 m | 978 |
| CAMP CREEK | Iowa | Poor | 1978 | 39.0 m | 977 |
| BOONE RIVER | Iowa | Poor | 1951 | 73.8 m | 977 |
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.