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 |
|---|---|---|---|---|---|
| DRAINAGE DITCH | Iowa | Good | 2006 | 39.0 m | 2,690 |
| DRAINAGE DITCH | Iowa | Good | 1960 | 7.1 m | 2,690 |
| WEST NISHNABOTNA RIVER | Iowa | Fair | 1984 | 85.6 m | 2,690 |
| TRIB TO ELK RUN CREEK | Iowa | Good | 1992 | 8.7 m | 2,687 |
| COX CREEK | Iowa | Fair | 1978 | 39.6 m | 2,680 |
| COX CREEK | Iowa | Fair | 1978 | 47.2 m | 2,680 |
| VOLGA RIVER | Iowa | Fair | 1978 | 95.4 m | 2,680 |
| DRY RUN CREEK | Iowa | Good | 1978 | 23.8 m | 2,680 |
| EAST NODAWAY RIVER | Iowa | Fair | 1975 | 61.3 m | 2,680 |
| VIRDEN CREEK | Iowa | Fair | 1970 | 7.6 m | 2,679 |
| DRY RUN CREEK | Iowa | Poor | 1905 | 13.4 m | 2,673 |
| DRAINAGE DITCH | Iowa | Fair | 1953 | 8.2 m | 2,671 |
| DRAINAGE DITCH | Iowa | Poor | 1953 | 7.6 m | 2,671 |
| SMALL NATURAL STREAM | Iowa | Poor | 1954 | 28.0 m | 2,671 |
| I-380 | Iowa | Fair | 1982 | 81.7 m | 2,670 |
| LITTLE WAPSIPINICON RVR | Iowa | Fair | 1954 | 43.3 m | 2,670 |
| US 20 | Iowa | Fair | 1984 | 89.9 m | 2,670 |
| ALEXANDER CREEK | Iowa | Fair | 1959 | 9.8 m | 2,660 |
| GOSHEN DITCH | Iowa | Good | 2007 | 27.4 m | 2,660 |
| WAPSINONOC CREEK | Iowa | Fair | 1988 | 52.4 m | 2,660 |
| FOUR MILE CREEK | Iowa | Good | 1972 | 27.7 m | 2,659 |
| MCCLOUD RUN | Iowa | Fair | 1980 | 20.7 m | 2,650 |
| FLOYD RIVER | Iowa | Good | 2004 | 92.4 m | 2,650 |
| FLOYD RIVER | Iowa | Good | 2004 | 93.6 m | 2,650 |
| US 63 | Iowa | Fair | 2006 | 91.4 m | 2,650 |
| WEST TARKIO RIVER | Iowa | Good | 1991 | 52.1 m | 2,650 |
| PONY CREEK | Iowa | Good | 1995 | 6.4 m | 2,649 |
| LITTLE BEAR CREEK | Iowa | Good | 2002 | 43.3 m | 2,648 |
| OVER IAIS RR | Iowa | Good | 2002 | 56.1 m | 2,648 |
| DRAINAGE DITCH | Iowa | Poor | 1953 | 7.3 m | 2,642 |
| DD | Iowa | Good | 1994 | 27.7 m | 2,641 |
| MIDDLE RIVER | Iowa | Good | 2015 | 84.4 m | 2,641 |
| CP RR/MILL CREEK | Iowa | Good | 2009 | 200.3 m | 2,640 |
| ENGLISH CREEK | Iowa | Poor | 1975 | 62.5 m | 2,640 |
| ABANDONED RR | Iowa | Fair | 1978 | 86.6 m | 2,633 |
| I80 US 6 I29 & BNSF IIR | Iowa | Good | 2017 | 1,121.1 m | 2,630 |
| LEE TOWN CREEKWAY | Iowa | Good | 2010 | 12.2 m | 2,628 |
| NORTH WALNUT CREEK | Iowa | Fair | 2011 | 7.8 m | 2,628 |
| JOHNSON CREEK | Iowa | Poor | 1933 | 10.7 m | 2,628 |
| SUGAR CREEK | Iowa | Good | 2017 | 62.2 m | 2,628 |
| SUGAR CREEK | Iowa | Poor | 1933 | 7.9 m | 2,628 |
| JOHNSON CREEK | Iowa | Good | 2022 | 61.3 m | 2,628 |
| LITTLE SIOUX RIVER | Iowa | Good | 1991 | 97.2 m | 2,623 |
| SNYDER CREEK | Iowa | Fair | 1964 | 20.7 m | 2,620 |
| BNSF RR AND STREAM | Iowa | Poor | 1964 | 75.0 m | 2,620 |
| STREAM | Iowa | Good | 2005 | 22.3 m | 2,620 |
| ROCK RIVER | Iowa | Fair | 1975 | 100.3 m | 2,620 |
| I 35 & I 80 | Iowa | Good | 2016 | 101.6 m | 2,620 |
| I-235 | Iowa | Good | 2002 | 92.1 m | 2,619 |
| CHESALEA CREEK | Iowa | Fair | 1955 | 8.5 m | 2,617 |
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.