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
SO.OVERFLOW IOWA RIVER Iowa Good 1978 59.7 m 1,050
US 34 Iowa Good 2006 113.7 m 1,050
BIG CEDAR CREEK Iowa Poor 1956 77.4 m 1,050
SEVEN MILE CREEK Iowa Good 2002 74.7 m 1,050
E BR INDIAN CR & RR Iowa Fair 1973 125.0 m 1,050
DYE CREEK Iowa Fair 2001 18.9 m 1,050
DRAINAGE DITCH Iowa Fair 1976 8.2 m 1,050
DRAINAGE DITCH Iowa Fair 1978 25.3 m 1,050
S BR DRY RUN Iowa Poor 1900 9.1 m 1,049
DRAINAGE DITCH Iowa Good 2005 22.9 m 1,049
I 29 Iowa Good 2016 123.7 m 1,048
LITTLE MOSQUITO Iowa Fair 1973 27.7 m 1,047
STORM CREEK Iowa Fair 1964 13.4 m 1,047
HARDIN CREEK Iowa Fair 1993 53.6 m 1,047
MIDDLE RIVER Iowa Fair 1969 63.1 m 1,047
NORTH RIVER Iowa Fair 1965 21.0 m 1,047
BADGER CREEK Iowa Poor 1968 23.5 m 1,043
OTTER CREEK Iowa Fair 1900 20.1 m 1,042
STREAM Iowa Fair 1945 32.0 m 1,041
US 20 Iowa Fair 1987 75.6 m 1,041
IOWA RIVER Iowa Poor 1957 51.8 m 1,041
BRANCH PRATTER CREEK Iowa Fair 1969 6.7 m 1,040
CEDAR CREEK Iowa Fair 1993 49.7 m 1,040
RUSH LAKE OUTLET Iowa Good 1984 7.9 m 1,037
SPRING CREEK Iowa Fair 1983 39.0 m 1,031
PLUM CREEK Iowa Good 1992 52.1 m 1,030
LINDSEY CREEK Iowa Fair 2000 39.0 m 1,030
I-80 Iowa Fair 1962 68.0 m 1,030
N SKUNK RIVER Iowa Good 2017 70.4 m 1,030
HONEY CREEK Iowa Good 1984 54.9 m 1,030
BRANCH WALNUT CREEK Iowa Good 2004 42.1 m 1,030
SOUTH WALNUT CREEK Iowa Good 2006 36.0 m 1,030
ALLISON CREEK Iowa Fair 1956 34.1 m 1,030
SAND CREEK Iowa Fair 1974 18.0 m 1,030
STREAM Iowa Good 1966 6.4 m 1,030
LITTLE SIOUX RIVER Iowa Fair 1970 108.2 m 1,030
BUCK CREEK Iowa Fair 1977 34.4 m 1,030
DES MOINES RIVER Iowa Fair 1980 220.7 m 1,028
LONG DICK CREEK Iowa Poor 1964 26.8 m 1,028
RICHLAND 81 OPEN DITCH Iowa Fair 2009 7.6 m 1,028
PERRY CREEK Iowa Fair 1949 48.2 m 1,028
PERRY CREEK Iowa Fair 1970 38.1 m 1,028
BUTLER CREEK Iowa Poor 1907 23.5 m 1,027
INDIAN CREEK Iowa Fair 1976 7.0 m 1,025
BLACKHAWK CREEK Iowa Fair 1979 27.4 m 1,024
GOAT CREEK Iowa Good 2014 10.0 m 1,023
UPHAMS SLOUGH CREEK Iowa Good 1968 6.4 m 1,021
BIG CEDAR RIVER Iowa Good 1950 89.0 m 1,021
SMALL STREAM Iowa Fair 1970 7.9 m 1,021
GRAN CREEK Iowa Good 2023 7.3 m 1,020

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.