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 |
|---|---|---|---|---|---|
| IC&E RR | Iowa | Good | 2009 | 58.2 m | 5,619 |
| ROCK CREEK | Iowa | Good | 2003 | 8.2 m | 5,613 |
| BIG WHISKEY CREEK | Iowa | Good | 2010 | 62.8 m | 5,600 |
| BIG WHISKEY CREEK | Iowa | Fair | 2010 | 62.8 m | 5,600 |
| CP RR | Iowa | Fair | 1996 | 58.5 m | 5,600 |
| HEATONS CREEK | Iowa | Fair | 1976 | 6.7 m | 5,600 |
| WAPSIPINICON RIVER | Iowa | Fair | 1973 | 161.8 m | 5,600 |
| OUTER DR | Iowa | Good | 2000 | 73.5 m | 5,600 |
| DES MOINES RIVER | Iowa | Fair | 1959 | 301.1 m | 5,600 |
| DRAINAGE DITCH | Iowa | Fair | 1960 | 7.0 m | 5,600 |
| UP RR | Iowa | Good | 2023 | 66.1 m | 5,600 |
| CEDAR RIVER | Iowa | Good | 1992 | 315.8 m | 5,600 |
| STREAM | Iowa | Good | 1991 | 10.1 m | 5,600 |
| UP RR & RD | Iowa | Fair | 1988 | 140.2 m | 5,600 |
| NE 46TH AVE BROADWAY | Iowa | Good | 2023 | 49.4 m | 5,600 |
| IA 17 | Iowa | Good | 1974 | 78.3 m | 5,600 |
| FOX RIVER | Iowa | Fair | 1948 | 65.5 m | 5,600 |
| STREAM | Iowa | Good | 2000 | 7.9 m | 5,600 |
| OUTER DR | Iowa | Good | 2000 | 73.5 m | 5,600 |
| DRY RUN CREEK | Iowa | Fair | 1994 | 43.3 m | 5,594 |
| US 61 & 151 | Iowa | Fair | 1957 | 22.3 m | 5,594 |
| MOSQUITO CREEK | Iowa | Fair | 1968 | 54.3 m | 5,557 |
| SOLDIER CREEK | Iowa | Poor | 1995 | 53.3 m | 5,546 |
| WALNUT CREEK | Iowa | Fair | 1988 | 101.1 m | 5,534 |
| 7TH WARD DITCH | Iowa | Fair | 1996 | 8.2 m | 5,534 |
| I-235 | Iowa | Good | 2007 | 93.9 m | 5,534 |
| BRANCH BLUE CREEK | Iowa | Good | 2019 | 21.3 m | 5,513 |
| DUCK CREEK | Iowa | Fair | 1969 | 66.1 m | 5,500 |
| R-27 | Iowa | Good | 1978 | 43.3 m | 5,500 |
| LITTLE LIME CREEK | Iowa | Fair | 1997 | 34.1 m | 5,500 |
| BEEDS CREEK | Iowa | Good | 2020 | 13.7 m | 5,500 |
| BRANCH PRAIRIE CREEK | Iowa | Good | 1970 | 52.4 m | 5,500 |
| N. FORK LONG CREEK | Iowa | Good | 1997 | 63.5 m | 5,500 |
| MILL RACE CREEK | Iowa | Good | 2011 | 28.3 m | 5,500 |
| IOWA RIVER OVERFLOW | Iowa | Fair | 1974 | 211.2 m | 5,500 |
| IOWA RIVER OVERFLOW | Iowa | Good | 2011 | 8.2 m | 5,500 |
| UNNAMED STREAM | Iowa | Good | 2019 | 7.8 m | 5,500 |
| R-27 | Iowa | Fair | 1978 | 43.3 m | 5,500 |
| TAFT ST | Iowa | Good | 1999 | 65.8 m | 5,500 |
| I80 & I29 INTERCHANGE | Iowa | Good | 2014 | 605.3 m | 5,500 |
| IOWA RIVER | Iowa | Fair | 1974 | 135.3 m | 5,500 |
| LITTLE LIME CREEK | Iowa | Good | 1997 | 34.1 m | 5,500 |
| WINNEBAGO RIVER & ROAD | Iowa | Fair | 1998 | 91.1 m | 5,500 |
| I 29 | Iowa | Fair | 1976 | 173.4 m | 5,500 |
| CLEAR CREEK | Iowa | Good | 1987 | 6.4 m | 5,500 |
| WINNEBAGO RIVER & ROAD | Iowa | Good | 1998 | 91.1 m | 5,500 |
| TAFT ST | Iowa | Good | 1999 | 65.8 m | 5,500 |
| CP RR | Iowa | Fair | 1996 | 58.5 m | 5,500 |
| DRAINAGE | Iowa | Fair | 1983 | 6.7 m | 5,495 |
| N FORK MAQUOKETA RIVER | Iowa | Fair | 1979 | 46.9 m | 5,495 |
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.