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.

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BridgeLocationConditionYear BuiltLengthADT
IOWAY CREEK Iowa Good 2016 80.8 m 3,863
OVER UPRR Iowa Fair 1966 36.6 m 3,863
UPPER IOWA RIVER Iowa Fair 1982 82.6 m 3,860
RACCOON RIVER Iowa Good 2004 73.5 m 3,853
BNSF RR & OSBORN Iowa Good 2019 158.2 m 3,853
COUNTY RD Iowa Good 2011 48.2 m 3,850
BNSF RR Iowa Good 1999 59.7 m 3,850
COUNTY RD Iowa Good 2011 48.2 m 3,850
MAQUOKETA RIVER Iowa Fair 1973 108.2 m 3,850
MAQUOKETA RIVER Iowa Fair 1974 108.5 m 3,850
BNSF RR Iowa Good 1999 59.7 m 3,850
OVER CC RR Iowa Fair 1971 52.1 m 3,850
PRAIRIE CREEK Iowa Good 2022 75.1 m 3,850
DEVILS CREEK Iowa Good 2000 127.4 m 3,850
OVER CC RR Iowa Good 1971 52.1 m 3,850
DEVILS CREEK Iowa Good 1999 127.4 m 3,850
US 30 Iowa Good 2018 131.2 m 3,849
DES MOINES RIVER Iowa Poor 1911 153.3 m 3,844
CEDAR RIVER Iowa Fair 1980 247.5 m 3,840
165TH AVE Iowa Fair 1978 46.9 m 3,840
SAYLOR CREEK Iowa Good 2003 17.4 m 3,835
DRAINAGE DITCH #34 Iowa Good 1985 11.3 m 3,830
DRAINAGE DITCH #34 Iowa Fair 1985 11.3 m 3,830
MOORE CREEK Iowa Fair 1972 22.3 m 3,830
I-380 Iowa Good 1980 81.4 m 3,830
TURKEY RIVER Iowa Fair 1971 28.3 m 3,830
DRAINAGE DISTRICT #1 Iowa Good 2005 12.2 m 3,826
MUD CREEK Iowa Fair 1972 28.3 m 3,826
BRUSH CREEK Iowa Fair 1965 99.4 m 3,820
STREAM Iowa Fair 1994 8.8 m 3,820
DES MOINES RIVER & RES Iowa Fair 1965 1,723.0 m 3,820
VACANT LOTS Iowa Good 1991 175.9 m 3,820
STREAM Iowa Good 1994 8.5 m 3,820
MISSISSIPPI RIVER & RR Iowa Fair 1972 919.9 m 3,820
CEDAR RIVER OVERFLOW Iowa Fair 1940 196.0 m 3,810
I-80 Iowa Good 1963 69.2 m 3,810
SMALL NATURAL STREAM Iowa Fair 1962 11.6 m 3,810
SMALL NATURAL STREAM Iowa Fair 1958 11.9 m 3,810
US 30 Iowa Good 2008 74.4 m 3,800
SR G5T Iowa Fair 1996 55.2 m 3,800
SR G5T Iowa Good 1996 55.2 m 3,800
UNNAMED CREEK Iowa Good 2022 27.7 m 3,800
DEER CREEK Iowa Good 2010 62.0 m 3,800
SKUNK RIVER Iowa Good 2022 171.1 m 3,800
BOONE RIVER Iowa Fair 1950 89.6 m 3,797
STREAM Iowa Fair 1977 6.7 m 3,790
SODUS CREEK Iowa Good 1982 11.6 m 3,790
OVER UP RR Iowa Fair 1983 61.3 m 3,790
MOSQUITO CREEK Iowa Fair 1993 92.7 m 3,786
INDIAN CREEK Iowa Fair 1988 12.2 m 3,786

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.