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 |
|---|---|---|---|---|---|
| MIDDLE RIVER | Iowa | Good | 1982 | 79.6 m | 4,160 |
| BASKINS CREEK | Iowa | Good | 1996 | 32.6 m | 4,160 |
| DRY RUN CREEK | Iowa | Fair | 1992 | 40.5 m | 4,156 |
| CLEAR CREEK | Iowa | Fair | 1979 | 46.9 m | 4,150 |
| CLEAR CREEK | Iowa | Good | 2002 | 63.4 m | 4,150 |
| MISSOURI RIVER OVERFLOW | Iowa | Good | 2019 | 336.2 m | 4,150 |
| W FK LITTLE SIOUX RIVER | Iowa | Good | 2004 | 68.0 m | 4,150 |
| IA 92 | Iowa | Good | 1996 | 68.9 m | 4,150 |
| NB I-35 & EB I-80 | Iowa | Good | 2009 | 93.6 m | 4,150 |
| IA 14 & SHERMAN CREEK | Iowa | Good | 1999 | 150.3 m | 4,150 |
| PINE CREEK | Iowa | Good | 1978 | 75.0 m | 4,150 |
| PINE CREEK | Iowa | Fair | 1978 | 74.1 m | 4,150 |
| NORTH SKUNK RIVER | Iowa | Good | 2002 | 66.8 m | 4,150 |
| WAPSIPINICON RIVER | Iowa | Fair | 1978 | 103.3 m | 4,150 |
| MISSOURI RIVER OVERFLOW | Iowa | Good | 2021 | 63.9 m | 4,150 |
| WB I-80 | Iowa | Good | 2009 | 102.3 m | 4,150 |
| MISSOURI RIVER OVERFLOW | Iowa | Good | 2021 | 63.9 m | 4,150 |
| WAPSIPINICON RIVER | Iowa | Fair | 1978 | 103.3 m | 4,150 |
| MISSOURI RIVER OVERFLOW | Iowa | Good | 2020 | 336.2 m | 4,150 |
| BLOODY RUN & DME RR | Iowa | Fair | 1988 | 143.3 m | 4,140 |
| BRANCH ROBERTS CREEK | Iowa | Fair | 1967 | 12.5 m | 4,140 |
| NORTH FORK CATFISH CREEK | Iowa | Fair | 2006 | 7.6 m | 4,131 |
| DRAINAGE DITCH | Iowa | Good | 1986 | 6.4 m | 4,130 |
| U.S. 63 | Iowa | Good | 2002 | 83.5 m | 4,130 |
| PRAIRIE CREEK | Iowa | Poor | 1964 | 68.9 m | 4,121 |
| CAMP CREEK | Iowa | Good | 2019 | 37.8 m | 4,120 |
| ENGLISH RIVER | Iowa | Fair | 1979 | 105.8 m | 4,120 |
| CREEK | Iowa | Good | 2003 | 7.6 m | 4,116 |
| STREAM | Iowa | Fair | 1952 | 9.8 m | 4,110 |
| STREAM | Iowa | Good | 2007 | 24.4 m | 4,110 |
| US 30 | Iowa | Good | 1995 | 84.7 m | 4,109 |
| YEADER CREEK | Iowa | Fair | 1976 | 26.8 m | 4,106 |
| TRAIL | Iowa | Fair | 1979 | 103.6 m | 4,100 |
| CROW CREEK | Iowa | Fair | 1928 | 6.4 m | 4,100 |
| AMBER RD | Iowa | Good | 2001 | 64.9 m | 4,100 |
| LONG CREEK | Iowa | Good | 1987 | 8.8 m | 4,100 |
| US 65 | Iowa | Good | 2003 | 81.1 m | 4,100 |
| IND PARK ROAD | Iowa | Good | 2002 | 50.0 m | 4,100 |
| US 65 | Iowa | Good | 2003 | 82.3 m | 4,100 |
| IOWA 38 | Iowa | Good | 2002 | 71.0 m | 4,100 |
| FOUR MILE CREEK | Iowa | Fair | 1965 | 56.1 m | 4,097 |
| BR EASTER LAKE | Iowa | Fair | 1967 | 23.8 m | 4,097 |
| IOWA RIVER | Iowa | Fair | 1985 | 441.7 m | 4,090 |
| I 29 US 6 AVE G | Iowa | Good | 2022 | 514.5 m | 4,090 |
| STORM CREEK | Iowa | Good | 1973 | 7.3 m | 4,090 |
| I-29 | Iowa | Poor | 1959 | 75.6 m | 4,090 |
| YEADER CREEK | Iowa | Good | 1984 | 12.8 m | 4,088 |
| OVERFLOW CHANNEL | Iowa | Good | 2021 | 81.4 m | 4,085 |
| IOWAY CREEK | Iowa | Good | 2021 | 124.1 m | 4,085 |
| DRAINAGE | Iowa | Good | 1999 | 57.3 m | 4,080 |
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.