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 |
|---|---|---|---|---|---|
| GRAND RIVER | Iowa | Fair | 2011 | 113.4 m | 820 |
| SMALL STREAM | Iowa | Good | 1987 | 6.4 m | 820 |
| PRAIRIE CREEK | Iowa | Poor | 1960 | 6.4 m | 820 |
| SMALL STREAM | Iowa | Fair | 1987 | 11.6 m | 820 |
| OTTER CREEK | Iowa | Poor | 1963 | 46.9 m | 820 |
| DRAINAGE DITCH | Iowa | Good | 1989 | 6.7 m | 820 |
| DRAINAGE DITCH | Iowa | Good | 1989 | 6.7 m | 820 |
| BALLARD CREEK | Iowa | Good | 1989 | 46.9 m | 820 |
| SKUNK RIVER | Iowa | Fair | 1989 | 101.2 m | 820 |
| OVER BNSF RR | Iowa | Good | 1994 | 93.3 m | 820 |
| UNION 118 WIRE LK OUTLT | Iowa | Good | 1989 | 23.8 m | 820 |
| EAGLE CREEK | Iowa | Poor | 1963 | 20.7 m | 818 |
| CLEAR CREEK | Iowa | Good | 2016 | 9.4 m | 818 |
| EMERY CREEK | Iowa | Fair | 1977 | 11.6 m | 818 |
| WHISKEY CREEK | Iowa | Fair | 1974 | 30.5 m | 818 |
| PRAIRIE CREEK | Iowa | Fair | 1964 | 23.8 m | 818 |
| LITTLE OCHEYEDAN RIVER | Iowa | Good | 1977 | 21.3 m | 818 |
| W FK W NISHNABOTNA RIVER | Iowa | Fair | 1963 | 38.4 m | 816 |
| HICKEY CREEK | Iowa | Fair | 1963 | 31.1 m | 816 |
| MOSQUITO CREEK | Iowa | Fair | 1974 | 58.5 m | 816 |
| POYNER CREEK | Iowa | Good | 1975 | 17.5 m | 815 |
| I-380 | Iowa | Fair | 1982 | 125.0 m | 815 |
| BEAVER DAM CREEK | Iowa | Fair | 1986 | 9.8 m | 815 |
| WINNEBAGO RIVER | Iowa | Fair | 1969 | 53.0 m | 815 |
| US 61 | Iowa | Good | 1981 | 82.9 m | 814 |
| DRAINAGE | Iowa | Good | 1951 | 7.0 m | 814 |
| FLOYD RIVER | Iowa | Poor | 1954 | 84.1 m | 813 |
| SHELL ROCK RIVER | Iowa | Good | 1996 | 96.3 m | 813 |
| DRAINAGE DITCH | Iowa | Fair | 1931 | 8.2 m | 810 |
| STREAM | Iowa | Fair | 1973 | 8.8 m | 810 |
| CREEK | Iowa | Fair | 1973 | 35.4 m | 810 |
| CEDAR CREEK | Iowa | Fair | 1967 | 44.2 m | 810 |
| WILLOW RIVER | Iowa | Fair | 1996 | 40.5 m | 810 |
| DES MOINES RIVER | Iowa | Fair | 1968 | 652.0 m | 810 |
| BEAR CREEK | Iowa | Fair | 1967 | 38.1 m | 810 |
| SILVER CREEK | Iowa | Good | 2011 | 28.5 m | 810 |
| N.RACCOON RIVER | Iowa | Fair | 1990 | 7.9 m | 810 |
| SMALL STREAM | Iowa | Fair | 1952 | 6.4 m | 810 |
| CARSON CREEK | Iowa | Poor | 1964 | 31.4 m | 810 |
| REASONER CREEK | Iowa | Fair | 1996 | 27.7 m | 810 |
| DRAINAGE DITCH | Iowa | Fair | 1990 | 6.4 m | 810 |
| S SKUNK RIVER | Iowa | Poor | 1961 | 107.0 m | 810 |
| WAPSINONOC CREEK | Iowa | Good | 2021 | 39.9 m | 810 |
| FORK OF LITTLE SIOUX | Iowa | Good | 2002 | 65.5 m | 808 |
| SMALL | Iowa | Good | 1977 | 7.9 m | 808 |
| SMALL STREAM | Iowa | Fair | 1954 | 42.1 m | 807 |
| IAIS RR | Iowa | Good | 1978 | 57.0 m | 807 |
| S RIVER | Iowa | Poor | 1949 | 70.7 m | 807 |
| OTTER CREEK | Iowa | Fair | 2001 | 47.9 m | 805 |
| SMALL STREAM | Iowa | Good | 2019 | 22.3 m | 805 |
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.