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 |
|---|---|---|---|---|---|
| SALT CREEK | Iowa | Good | 2019 | 140.5 m | 6,600 |
| LAMBERT AVE | Iowa | Good | 2011 | 46.7 m | 6,600 |
| LAMBERT AVE | Iowa | Good | 2011 | 46.7 m | 6,600 |
| IA 57 | Iowa | Fair | 1994 | 93.9 m | 6,600 |
| BULGER CREEK & IAIS RR | Iowa | Fair | 1997 | 182.0 m | 6,600 |
| WANATEE CREEK | Iowa | Good | 2011 | 11.3 m | 6,593 |
| UP RR & ARMORY RD | Iowa | Good | 2008 | 185.3 m | 6,588 |
| BROADWAY AVE | Iowa | Fair | 1976 | 47.2 m | 6,550 |
| W BURLINGTON AVE | Iowa | Fair | 1976 | 44.8 m | 6,550 |
| W BURLINGTON AVE | Iowa | Good | 1976 | 50.0 m | 6,550 |
| BROADWAY AVE | Iowa | Fair | 1976 | 47.2 m | 6,550 |
| BLACK HAWK CREEK | Iowa | Fair | 1971 | 110.9 m | 6,513 |
| E BRANCH IOWA RIVER | Iowa | Good | 2002 | 31.4 m | 6,500 |
| LITTLE WHISKEY CREEK | Iowa | Fair | 1959 | 37.2 m | 6,500 |
| LITTLE WHISKEY CREEK | Iowa | Fair | 1953 | 37.2 m | 6,500 |
| INDIAN CREEK | Iowa | Fair | 1937 | 6.1 m | 6,500 |
| TRIB TO IOWA RIVER | Iowa | Good | 2008 | 7.6 m | 6,500 |
| LOCAL STREAM | Iowa | Good | 2000 | 55.8 m | 6,500 |
| E FORK CROOKED CREEK | Iowa | Fair | 2014 | 60.0 m | 6,500 |
| SR T55 | Iowa | Good | 2000 | 54.0 m | 6,500 |
| SR T55 | Iowa | Good | 2000 | 54.0 m | 6,500 |
| US 34 | Iowa | Fair | 1973 | 130.8 m | 6,500 |
| ALLEN CREEK | Iowa | Fair | 1929 | 22.3 m | 6,500 |
| LOCAL STREAM | Iowa | Good | 1999 | 54.9 m | 6,500 |
| STREAM | Iowa | Good | 1991 | 6.4 m | 6,500 |
| BIG CREEK | Iowa | Good | 1992 | 6.4 m | 6,500 |
| US 20 | Iowa | Good | 1996 | 46.0 m | 6,494 |
| OVER CC RR | Iowa | Good | 1996 | 84.7 m | 6,494 |
| LANE ST | Iowa | Fair | 1996 | 39.9 m | 6,494 |
| OVER UP RR & STREET | Iowa | Fair | 1983 | 212.8 m | 6,454 |
| WAUBONSIE DITCH | Iowa | Good | 2010 | 75.3 m | 6,450 |
| WAUBONSIE DITCH | Iowa | Good | 2011 | 75.3 m | 6,450 |
| US 30 | Iowa | Fair | 1967 | 67.7 m | 6,450 |
| STREAM | Iowa | Fair | 1991 | 7.9 m | 6,447 |
| US 20 | Iowa | Fair | 1970 | 79.9 m | 6,400 |
| IA 163 | Iowa | Fair | 1994 | 74.1 m | 6,400 |
| E. FORK CROOKED CREEK | Iowa | Good | 1997 | 55.8 m | 6,400 |
| SPRING CREEK/PEDESTRIAN | Iowa | Fair | 1958 | 11.9 m | 6,400 |
| QUARTER SECTION RUN | Iowa | Good | 2010 | 15.9 m | 6,400 |
| BR WALNUT CREEK | Iowa | Good | 1980 | 6.4 m | 6,400 |
| US 30 | Iowa | Good | 1975 | 82.9 m | 6,394 |
| CROW CREEK | Iowa | Good | 1993 | 43.3 m | 6,382 |
| GOOSE CREEK | Iowa | Poor | 1978 | 24.7 m | 6,376 |
| 225TH STREET | Iowa | Fair | 1974 | 46.0 m | 6,350 |
| MUCHAKINOCK CREEK | Iowa | Good | 2001 | 48.5 m | 6,350 |
| 225TH STREET | Iowa | Fair | 1974 | 46.0 m | 6,350 |
| SILVER CREEK | Iowa | Fair | 1974 | 63.7 m | 6,350 |
| SILVER CREEK | Iowa | Fair | 1974 | 63.7 m | 6,350 |
| STREAM | Iowa | Good | 1982 | 21.6 m | 6,350 |
| STREAM | Iowa | Good | 2020 | 9.9 m | 6,300 |
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.