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 |
|---|---|---|---|---|---|
| BERRYS RUN | Iowa | Good | 2013 | 22.3 m | 6,874 |
| US 20 | Iowa | Good | 1984 | 81.7 m | 6,868 |
| EAST HENRY ST | Iowa | Fair | 1967 | 48.5 m | 6,858 |
| KEG CREEK | Iowa | Fair | 1971 | 80.8 m | 6,850 |
| KEG CREEK | Iowa | Fair | 1971 | 80.8 m | 6,850 |
| DRAINAGE DITCH | Iowa | Good | 2009 | 37.5 m | 6,850 |
| DRAINAGE DITCH | Iowa | Good | 2009 | 37.5 m | 6,850 |
| IA 5 | Iowa | Good | 1997 | 85.6 m | 6,850 |
| HAYNIE SLOUGH | Iowa | Fair | 1971 | 25.3 m | 6,850 |
| WILLOW CREEK | Iowa | Fair | 1933 | 16.2 m | 6,850 |
| WILLOW CREEK | Iowa | Fair | 1970 | 15.9 m | 6,850 |
| HAYNIE SLOUGH | Iowa | Fair | 1971 | 25.3 m | 6,850 |
| SMALL STREAM | Iowa | Good | 1991 | 7.0 m | 6,813 |
| OVER UP RR | Iowa | Poor | 1980 | 85.0 m | 6,813 |
| HOG CREEK | Iowa | Fair | 1983 | 34.4 m | 6,800 |
| GRUNDY RD | Iowa | Good | 2000 | 50.0 m | 6,800 |
| PONY CREEK | Iowa | Good | 2011 | 47.2 m | 6,800 |
| Y 17 (EPWORTH) | Iowa | Good | 1988 | 52.1 m | 6,800 |
| GRUNDY RD | Iowa | Good | 2000 | 50.0 m | 6,800 |
| STREAM | Iowa | Good | 2000 | 47.2 m | 6,800 |
| BNSF RR & EATON DITCH | Iowa | Fair | 1970 | 98.1 m | 6,800 |
| OVER BNSF RR | Iowa | Fair | 1968 | 65.5 m | 6,800 |
| JESUP AVE | Iowa | Good | 2011 | 43.6 m | 6,800 |
| STREAM | Iowa | Fair | 1919 | 13.1 m | 6,800 |
| BNSF RR & EATON DITCH | Iowa | Fair | 1970 | 98.1 m | 6,800 |
| JESUP AVE | Iowa | Good | 2010 | 43.6 m | 6,800 |
| PONY CREEK | Iowa | Good | 2010 | 47.2 m | 6,800 |
| RAMP OVER IA 376 & UP RR | Iowa | Fair | 1976 | 104.9 m | 6,800 |
| DRAINAGE | Iowa | Fair | 1956 | 6.4 m | 6,800 |
| FOURMILE CREEK | Iowa | Fair | 1922 | 19.2 m | 6,800 |
| OVER UP RR | Iowa | Fair | 1982 | 107.0 m | 6,800 |
| I-380 & US 218 | Iowa | Good | 1972 | 80.2 m | 6,800 |
| WINNEBAGO RIVER | Iowa | Good | 1984 | 59.7 m | 6,800 |
| BEAR CREEK | Iowa | Good | 2016 | 47.2 m | 6,800 |
| FOURMILE CREEK | Iowa | Fair | 1949 | 15.9 m | 6,800 |
| Y 17 (EPWORTH) | Iowa | Fair | 1988 | 52.1 m | 6,750 |
| OVER UP RR | Iowa | Fair | 1963 | 62.8 m | 6,750 |
| STREAM | Iowa | Good | 2000 | 47.2 m | 6,750 |
| ROGG CREEK | Iowa | Good | 1985 | 46.9 m | 6,700 |
| I80 WB TO US 218 SB | Iowa | Good | 2020 | 267.2 m | 6,700 |
| FOUR MILE CREEK | Iowa | Good | 1981 | 69.5 m | 6,698 |
| OTTER CREEK | Iowa | Good | 1982 | 6.4 m | 6,694 |
| RALSTON CREEK | Iowa | Good | 2014 | 17.7 m | 6,667 |
| BIG CREEK | Iowa | Fair | 1960 | 6.4 m | 6,650 |
| IA 57 | Iowa | Fair | 1994 | 93.0 m | 6,650 |
| MUDDY CREEK | Iowa | Good | 1988 | 39.0 m | 6,625 |
| MOSQUITO CREEK & RR | Iowa | Fair | 1996 | 174.0 m | 6,622 |
| SALT CREEK | Iowa | Good | 2019 | 140.5 m | 6,600 |
| LAMBERT AVE | Iowa | Good | 2011 | 46.7 m | 6,600 |
| LITTLE MOSQUITO CREEK | Iowa | Fair | 1968 | 8.2 m | 6,600 |
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.