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 |
|---|---|---|---|---|---|
| US 218 | Iowa | Good | 1989 | 79.6 m | 1,928 |
| SIXMILE CREEK | Iowa | Fair | 1972 | 30.5 m | 1,926 |
| CREEK | Iowa | Good | 1977 | 7.6 m | 1,926 |
| BLACKHAWK CREEK | Iowa | Fair | 1985 | 10.7 m | 1,925 |
| DRAINAGE | Iowa | Fair | 1972 | 8.2 m | 1,925 |
| U.S. 61 | Iowa | Good | 2000 | 71.3 m | 1,920 |
| S SKUNK RIVER | Iowa | Fair | 1979 | 58.5 m | 1,920 |
| SIMMONS CREEK | Iowa | Good | 2014 | 14.0 m | 1,920 |
| OVER UP RR | Iowa | Fair | 1939 | 43.3 m | 1,920 |
| SOUTH SKUNK RIVER | Iowa | Good | 1988 | 103.6 m | 1,920 |
| CALAMUS CREEK | Iowa | Fair | 1954 | 39.0 m | 1,920 |
| I-35 | Iowa | Good | 1999 | 79.2 m | 1,911 |
| LITTLE MAQUOKETA RIVER | Iowa | Good | 2015 | 175.6 m | 1,910 |
| EAST NISHNABOTNA RIVER | Iowa | Fair | 1975 | 185.6 m | 1,910 |
| DRAINAGE DITCH | Iowa | Good | 2015 | 9.6 m | 1,910 |
| E BIG CREEK | Iowa | Fair | 1956 | 37.8 m | 1,910 |
| FISHER CREEK | Iowa | Fair | 1975 | 40.5 m | 1,910 |
| STREAM | Iowa | Good | 1985 | 9.8 m | 1,910 |
| BRANCH OLD MANS CREEK | Iowa | Fair | 1985 | 44.5 m | 1,910 |
| BRANCH OLD MANS CREEK | Iowa | Fair | 1985 | 9.8 m | 1,910 |
| BRANCH OLD MANS CREEK | Iowa | Good | 1985 | 9.8 m | 1,910 |
| BIG SIOUX RIVER | Iowa | Fair | 1991 | 157.9 m | 1,910 |
| DRAINAGE DITCH | Iowa | Good | 1954 | 7.6 m | 1,910 |
| CEDAR RIVER | Iowa | Fair | 1975 | 175.9 m | 1,908 |
| TROLLEY TRAIL | Iowa | Good | 1989 | 53.3 m | 1,908 |
| BIG CEDAR RIVER | Iowa | Fair | 2002 | 97.5 m | 1,905 |
| OVRFLW SHELL ROCK RIVER | Iowa | Poor | 1900 | 21.9 m | 1,902 |
| 210TH ST | Iowa | Fair | 1981 | 82.0 m | 1,900 |
| BEEDS CREEK | Iowa | Fair | 1956 | 25.0 m | 1,900 |
| WOLF CREEK | Iowa | Fair | 1985 | 29.9 m | 1,900 |
| LITTLE CEDAR RIVER | Iowa | Good | 1979 | 85.3 m | 1,900 |
| STREAM | Iowa | Fair | 1989 | 10.2 m | 1,900 |
| W BR FLOYD RIVER | Iowa | Fair | 1989 | 79.6 m | 1,900 |
| DRY CREEK | Iowa | Good | 1996 | 39.3 m | 1,895 |
| TRIB TO CRANE CREEK | Iowa | Good | 2007 | 27.4 m | 1,895 |
| US 18 | Iowa | Good | 1998 | 71.3 m | 1,895 |
| UP RR | Iowa | Fair | 1984 | 54.6 m | 1,890 |
| BRANCH BEAVER CREEK | Iowa | Fair | 1967 | 10.4 m | 1,890 |
| MIDDLE BEAVER CREEK | Iowa | Good | 1932 | 9.8 m | 1,890 |
| BRANCH BEAVER CREEK | Iowa | Fair | 1967 | 10.4 m | 1,890 |
| CLANTON CREEK | Iowa | Good | 1976 | 57.3 m | 1,890 |
| MIDDLE RIVER | Iowa | Fair | 1976 | 89.3 m | 1,890 |
| EMIGRANT CREEK | Iowa | Fair | 1992 | 8.8 m | 1,890 |
| EMIGRANT CREEK | Iowa | Good | 1992 | 42.4 m | 1,890 |
| PARADISE CREEK | Iowa | Fair | 1991 | 10.1 m | 1,890 |
| PARADISE CREEK | Iowa | Good | 1992 | 9.1 m | 1,890 |
| STREAM | Iowa | Fair | 1977 | 7.6 m | 1,890 |
| DRAINAGE DITCH | Iowa | Fair | 1976 | 6.7 m | 1,890 |
| GRANTS CREEK | Iowa | Good | 1984 | 7.6 m | 1,890 |
| STREAM | Iowa | Good | 2017 | 6.3 m | 1,890 |
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.