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 |
|---|---|---|---|---|---|
| SOUTH FORK IOWA RIVER | Iowa | Poor | 1964 | 39.0 m | 373 |
| U.S. 20 | Iowa | Fair | 1970 | 82.3 m | 373 |
| BRANCH YELLOW RIVER | Iowa | Poor | 1922 | 6.7 m | 373 |
| BEAVER CREEK NORTH FORK | Iowa | Fair | 1990 | 8.8 m | 373 |
| WOLF CREEK BRANCH | Iowa | Poor | 1972 | 9.8 m | 373 |
| WEST FORK CEDAR RIVER | Iowa | Poor | 1970 | 150.0 m | 373 |
| SMALL STREAM | Iowa | Poor | 1970 | 31.4 m | 373 |
| SMALL STREAM | Iowa | Poor | 1969 | 23.5 m | 373 |
| WEST FORK CEDAR RIVER | Iowa | Fair | 1959 | 106.1 m | 373 |
| STREAM | Iowa | Fair | 1967 | 10.1 m | 373 |
| STREAM | Iowa | Good | 2015 | 7.9 m | 373 |
| CREEK | Iowa | Poor | 1900 | 6.7 m | 373 |
| HONEY CREEK | Iowa | Poor | 1967 | 26.8 m | 373 |
| DRAINAGE | Iowa | Good | 2007 | 12.2 m | 373 |
| HONEY CREEK | Iowa | Good | 2020 | 8.8 m | 373 |
| DRAINAGE | Iowa | Good | 2006 | 7.6 m | 373 |
| SINK CREEK | Iowa | Poor | 1900 | 6.1 m | 373 |
| RICOCHET CREEK | Iowa | Good | 2001 | 8.7 m | 373 |
| W BR BUFFALO CR | Iowa | Good | 2003 | 34.4 m | 373 |
| TRIB TO BRUSH CREEK | Iowa | Good | 2020 | 9.8 m | 372 |
| WAPSIPINICON RIVER | Iowa | Good | 2020 | 129.8 m | 371 |
| LYTLE CREEK | Iowa | Good | 1994 | 50.3 m | 370 |
| LAMALEES CREEK | Iowa | Good | 1996 | 13.4 m | 370 |
| SOLFERINO CREEK | Iowa | Good | 1978 | 9.4 m | 370 |
| FOX RIVER | Iowa | Fair | 1984 | 62.2 m | 370 |
| BR LOST CREEK | Iowa | Fair | 1992 | 11.0 m | 370 |
| STREAM | Iowa | Fair | 1962 | 6.4 m | 370 |
| MIDDLE CREEK | Iowa | Fair | 1990 | 31.4 m | 370 |
| OVER UP RR | Iowa | Poor | 1961 | 46.6 m | 370 |
| CEDAR CREEK | Iowa | Fair | 2000 | 31.4 m | 370 |
| N SKUNK RIVER OVERFLOW | Iowa | Poor | 1961 | 54.3 m | 370 |
| N SKUNK RIVER | Iowa | Poor | 1966 | 61.6 m | 370 |
| OTTER CREEK | Iowa | Fair | 1993 | 11.6 m | 370 |
| CREEK | Iowa | Fair | 1993 | 7.6 m | 370 |
| COAL CREEK | Iowa | Good | 2015 | 29.9 m | 370 |
| SUGAR CREEK | Iowa | Good | 1985 | 58.5 m | 370 |
| BONNELL CREEK | Iowa | Poor | 1949 | 31.1 m | 370 |
| ROCK CREEK | Iowa | Poor | 1985 | 31.4 m | 370 |
| MIDDLE FORK GRAND RIVER | Iowa | Fair | 1989 | 44.5 m | 370 |
| LITTLE MEADOW CK | Iowa | Fair | 1989 | 8.2 m | 369 |
| UNNAMED CREEK | Iowa | Good | 2012 | 7.6 m | 369 |
| LITTLE ROCK RIVER | Iowa | Poor | 1955 | 61.0 m | 369 |
| UNNAMED CREEK | Iowa | Poor | 1900 | 7.0 m | 369 |
| BRANCH MAPLE RIVER | Iowa | Poor | 1970 | 23.5 m | 369 |
| LINN CR | Iowa | Poor | 1956 | 33.5 m | 369 |
| NO NAME CREEK | Iowa | Good | 1973 | 22.9 m | 369 |
| BIG CREEK | Iowa | Good | 2011 | 46.0 m | 369 |
| BEAVER CREEK | Iowa | Poor | 1973 | 27.7 m | 369 |
| MONTGOMERY CREEK | Iowa | Good | 2014 | 10.8 m | 369 |
| KANARANZI CREEK | Iowa | Poor | 1959 | 61.6 m | 369 |
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.