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 |
|---|---|---|---|---|---|
| US 30 W JCT | Iowa | Fair | 1980 | 111.3 m | 6,300 |
| NE 3RD ST | Iowa | Good | 2000 | 37.5 m | 6,300 |
| STREAM | Iowa | Good | 2020 | 9.9 m | 6,300 |
| SOUTH SKUNK RIVER | Iowa | Fair | 1967 | 98.1 m | 6,300 |
| DRAINAGE | Iowa | Good | 2020 | 6.4 m | 6,300 |
| CAMP CREEK | Iowa | Good | 2007 | 61.9 m | 6,300 |
| CAMP CREEK | Iowa | Good | 2007 | 61.9 m | 6,300 |
| BR S SKUNK RVR OVERFLOW | Iowa | Fair | 1967 | 6.4 m | 6,300 |
| MAQUOKETA RIVER | Iowa | Poor | 1980 | 64.6 m | 6,294 |
| DRAINAGE DITCH | Iowa | Fair | 1988 | 16.3 m | 6,294 |
| GOOSE CREEK | Iowa | Good | 1997 | 43.3 m | 6,288 |
| DRY CREEK | Iowa | Good | 2010 | 39.6 m | 6,285 |
| US 20 US 52 | Iowa | Good | 1987 | 78.3 m | 6,285 |
| IOWA RIVER | Iowa | Fair | 1934 | 115.8 m | 6,251 |
| MUCHAKINOK CREEK | Iowa | Good | 1997 | 61.0 m | 6,250 |
| TRIB. TO MUCHAKINOCK | Iowa | Good | 1997 | 8.2 m | 6,250 |
| KITTY CREEK | Iowa | Good | 2002 | 37.5 m | 6,250 |
| MUCHAKINOK CREEK | Iowa | Good | 1997 | 61.0 m | 6,250 |
| MUCHAKINOCK CREEK | Iowa | Good | 2001 | 48.5 m | 6,250 |
| KITTY CREEK | Iowa | Fair | 1960 | 21.9 m | 6,250 |
| W BR INDIAN CREEK | Iowa | Good | 2000 | 43.6 m | 6,241 |
| US 20 | Iowa | Fair | 1978 | 85.3 m | 6,217 |
| SALVESEN CREEK | Iowa | Good | 2017 | 21.6 m | 6,200 |
| US 61 | Iowa | Fair | 2011 | 83.9 m | 6,200 |
| SINK CREEK | Iowa | Good | 1983 | 54.0 m | 6,200 |
| I-235/3RD ST. RAMP B | Iowa | Good | 2003 | 72.5 m | 6,200 |
| DRAINAGE DITCH | Iowa | Good | 1988 | 6.4 m | 6,200 |
| OLD MANS CREEK | Iowa | Good | 1983 | 57.3 m | 6,200 |
| WOLF CREEK | Iowa | Good | 2004 | 11.9 m | 6,200 |
| UP RR & MCKINLEY ST | Iowa | Good | 2012 | 335.3 m | 6,200 |
| PERRY CREEK CONDUIT | Iowa | Fair | 2019 | 28.4 m | 6,200 |
| US 20 | Iowa | Good | 1974 | 81.7 m | 6,170 |
| US 20 | Iowa | Good | 1996 | 75.3 m | 6,162 |
| BIG CREEK | Iowa | Good | 1968 | 48.2 m | 6,150 |
| IA 946 & CITY STS& CCP R | Iowa | Fair | 1990 | 417.6 m | 6,150 |
| PERRY CREEK | Iowa | Fair | 1978 | 27.7 m | 6,129 |
| US 20 & US 75 | Iowa | Fair | 1975 | 97.5 m | 6,120 |
| BRANCH OF KITTY CREEK | Iowa | Fair | 1972 | 8.2 m | 6,117 |
| PRICE CREEK | Iowa | Good | 2010 | 46.6 m | 6,100 |
| SOUTH RACCOON RIVER | Iowa | Good | 2015 | 118.6 m | 6,100 |
| IA 946 & CITY STS& CCP R | Iowa | Fair | 1990 | 437.4 m | 6,100 |
| RAMP G OVER I-29 | Iowa | Fair | 1976 | 102.7 m | 6,100 |
| US 20 | Iowa | Fair | 1978 | 88.1 m | 6,100 |
| LITTLE CEDAR CREEK | Iowa | Good | 2005 | 6.4 m | 6,100 |
| PHEASANT CREEK | Iowa | Fair | 2002 | 7.0 m | 6,100 |
| STREAM | Iowa | Fair | 1967 | 8.8 m | 6,100 |
| WILLOW CREEK | Iowa | Fair | 1971 | 6.4 m | 6,100 |
| DRAINAGE DITCH | Iowa | Fair | 1967 | 31.4 m | 6,100 |
| US 20 & US 75 | Iowa | Fair | 1978 | 88.1 m | 6,100 |
| PLUM CREEK | Iowa | Good | 2009 | 73.8 m | 6,100 |
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.