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 |
|---|---|---|---|---|---|
| CCP RR & BNSF RR & RAMP | Iowa | Fair | 1999 | 230.7 m | 5,200 |
| DRAINAGE DITCH | Iowa | Fair | 1976 | 9.8 m | 5,200 |
| CCP RR & BNSF RR & BUS 7 | Iowa | Fair | 1999 | 261.2 m | 5,200 |
| BRANCH MAQUOKETA RIVER | Iowa | Good | 1975 | 11.6 m | 5,200 |
| STREAM | Iowa | Fair | 1975 | 11.6 m | 5,200 |
| BLOWERS CREEK | Iowa | Good | 1991 | 61.3 m | 5,195 |
| CEDAR RIVER | Iowa | Fair | 1984 | 214.3 m | 5,195 |
| CREEK | Iowa | Fair | 1980 | 7.9 m | 5,181 |
| US 30 | Iowa | Fair | 1994 | 62.5 m | 5,164 |
| OVER CIC RR | Iowa | Fair | 1979 | 31.1 m | 5,126 |
| I-80 | Iowa | Fair | 1966 | 69.2 m | 5,116 |
| I-80 & US-65 | Iowa | Fair | 2013 | 94.2 m | 5,106 |
| CRANE CREEK | Iowa | Fair | 1977 | 28.3 m | 5,106 |
| DRAINAGE DITCH | Iowa | Fair | 1935 | 11.6 m | 5,100 |
| S FORK MAQUOKETA RIVER | Iowa | Fair | 1967 | 114.0 m | 5,100 |
| OVERFLOW | Iowa | Good | 1995 | 150.3 m | 5,100 |
| DRAINAGE | Iowa | Good | 2004 | 11.6 m | 5,100 |
| MAPLE RIVER OVERFLOW | Iowa | Good | 2016 | 11.5 m | 5,100 |
| MISSISSIPPI BLVD | Iowa | Good | 2019 | 42.9 m | 5,100 |
| RAMP B TO IA AVE | Iowa | Good | 1996 | 70.1 m | 5,100 |
| HAZELTON CREEK | Iowa | Good | 1986 | 40.5 m | 5,100 |
| STREAM | Iowa | Good | 1959 | 11.3 m | 5,100 |
| MIDDLE RACCOON RIVER | Iowa | Good | 1985 | 58.2 m | 5,100 |
| SKUNK RIVER | Iowa | Good | 1995 | 209.4 m | 5,100 |
| IOWA RIVER | Iowa | Good | 2015 | 171.3 m | 5,100 |
| TRIB TO WAPSIPINICON | Iowa | Good | 2001 | 10.7 m | 5,100 |
| S FORK MAQUOKET RIVER | Iowa | Fair | 1998 | 123.7 m | 5,100 |
| FLOYD RIVER | Iowa | Fair | 1992 | 63.7 m | 5,100 |
| WAPSIPINICON RIVER | Iowa | Fair | 1982 | 142.6 m | 5,100 |
| WAPSIPINICON OVERFLOW | Iowa | Fair | 1982 | 80.5 m | 5,100 |
| WAPSIPINICON OVERFLOW | Iowa | Fair | 1983 | 94.8 m | 5,100 |
| FRONTAGE WB BROADWAY | Iowa | Good | 2023 | 292.6 m | 5,100 |
| SKUNK RIVER | Iowa | Fair | 1970 | 210.3 m | 5,100 |
| I-380 | Iowa | Fair | 1975 | 78.6 m | 5,100 |
| STREAM | Iowa | Good | 1974 | 28.7 m | 5,100 |
| LITTLE MAQUOKETA RIVER | Iowa | Fair | 1947 | 74.1 m | 5,100 |
| HEWITT CREEK | Iowa | Good | 1985 | 48.2 m | 5,100 |
| CPRR | Iowa | Good | 1998 | 83.8 m | 5,100 |
| DES MOINES RVR RR & RD | Iowa | Fair | 1994 | 396.9 m | 5,100 |
| OAKS AVE | Iowa | Good | 1996 | 58.2 m | 5,100 |
| DRAINAGE | Iowa | Fair | 1962 | 8.2 m | 5,095 |
| ABANDONED RR | Iowa | Fair | 1976 | 54.6 m | 5,095 |
| PERRY CREEK | Iowa | Good | 1900 | 47.9 m | 5,086 |
| CRESENT CREEK | Iowa | Fair | 2004 | 7.3 m | 5,086 |
| I 80 & I 35 | Iowa | Good | 2017 | 273.9 m | 5,079 |
| BOONE RIVER/REC TRAIL | Iowa | Fair | 1974 | 99.1 m | 5,050 |
| SPRING CREEK | Iowa | Good | 1995 | 46.9 m | 5,050 |
| BOONE RIVER | Iowa | Fair | 1974 | 99.1 m | 5,050 |
| I-29 | Iowa | Good | 1977 | 79.6 m | 5,050 |
| SPRING CREEK | Iowa | Good | 1956 | 46.2 m | 5,050 |
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.