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 |
|---|---|---|---|---|---|
| BNSF RR | Iowa | Good | 1999 | 69.8 m | 3,400 |
| BNSF RR | Iowa | Good | 1999 | 69.8 m | 3,400 |
| ABANDON RR BIKE PATH | Iowa | Fair | 1960 | 43.0 m | 3,400 |
| STREAM | Iowa | Fair | 1960 | 10.1 m | 3,400 |
| LINN CREEK | Iowa | Fair | 1972 | 64.0 m | 3,399 |
| US 20 | Iowa | Fair | 1973 | 87.5 m | 3,398 |
| WEST 32ND STREET | Iowa | Good | 2002 | 37.5 m | 3,397 |
| BR WAPSINONOC CREEK | Iowa | Good | 2022 | 7.6 m | 3,390 |
| CYLINDER CREEK | Iowa | Good | 2023 | 30.8 m | 3,390 |
| I 29 & CBEC RR | Iowa | Good | 2019 | 806.4 m | 3,380 |
| SMALL STREAM | Iowa | Fair | 1966 | 6.7 m | 3,370 |
| STREAM | Iowa | Fair | 1936 | 6.4 m | 3,370 |
| LITTLE BEAVER CREEK | Iowa | Good | 1984 | 9.8 m | 3,370 |
| DRY RUN CREEK | Iowa | Good | 1977 | 9.4 m | 3,370 |
| STREAM | Iowa | Good | 1935 | 6.4 m | 3,370 |
| N.FORK LONG CREEK | Iowa | Good | 1985 | 11.6 m | 3,370 |
| IOWA RIVER | Iowa | Fair | 1984 | 137.5 m | 3,370 |
| WEST NODAWAY RIVER | Iowa | Fair | 1972 | 102.4 m | 3,360 |
| STREAM | Iowa | Fair | 1956 | 8.8 m | 3,360 |
| DRY RUN CREEK BIKE PATH | Iowa | Good | 1992 | 147.2 m | 3,360 |
| STREAM | Iowa | Good | 1993 | 7.6 m | 3,360 |
| BUCK CREEK | Iowa | Good | 1971 | 39.0 m | 3,360 |
| CC RR | Iowa | Fair | 1931 | 63.4 m | 3,353 |
| DONALDSON CREEK | Iowa | Good | 2014 | 31.4 m | 3,350 |
| STREAM | Iowa | Good | 1985 | 11.0 m | 3,350 |
| STREAM | Iowa | Fair | 1979 | 31.4 m | 3,350 |
| I-35 | Iowa | Fair | 1968 | 79.6 m | 3,350 |
| DME RR | Iowa | Good | 2016 | 54.7 m | 3,350 |
| DME RR | Iowa | Fair | 1977 | 54.9 m | 3,350 |
| WILLOW CREEK | Iowa | Fair | 1949 | 15.2 m | 3,347 |
| 14TH ST DRAINAGE DITCH | Iowa | Fair | 1965 | 13.1 m | 3,347 |
| CREEK | Iowa | Good | 2007 | 13.2 m | 3,344 |
| UPPER IOWA RIVER | Iowa | Fair | 1963 | 125.6 m | 3,340 |
| CEDAR RIVER | Iowa | Fair | 1984 | 171.6 m | 3,340 |
| TURKEY RIVER | Iowa | Fair | 1968 | 159.1 m | 3,340 |
| MINERS CREEK | Iowa | Fair | 1974 | 36.6 m | 3,340 |
| DRAINAGE DITCH | Iowa | Fair | 1945 | 8.2 m | 3,340 |
| LUX CREEK | Iowa | Good | 1986 | 8.8 m | 3,340 |
| SOUTH CEDAR CREEK | Iowa | Good | 1983 | 125.3 m | 3,340 |
| NORTH CEDAR CREEK | Iowa | Fair | 1983 | 61.0 m | 3,340 |
| OVER IMRL RR | Iowa | Good | 2008 | 83.5 m | 3,339 |
| STREAM | Iowa | Good | 2020 | 10.1 m | 3,339 |
| RAMSEY CREEK | Iowa | Fair | 1994 | 37.5 m | 3,330 |
| STREAM | Iowa | Fair | 1940 | 6.3 m | 3,330 |
| ENGLISH RIVER OVERFLOW | Iowa | Fair | 1994 | 42.1 m | 3,330 |
| ENGLISH RIVER | Iowa | Good | 1994 | 88.7 m | 3,330 |
| MC CARTY CREEK | Iowa | Good | 1974 | 37.8 m | 3,330 |
| DRAINAGE DITCH | Iowa | Fair | 1994 | 7.0 m | 3,330 |
| STREAM | Iowa | Fair | 1976 | 7.0 m | 3,330 |
| WHITE BREAST CREEK | Iowa | Good | 2017 | 82.6 m | 3,330 |
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.