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
IOWA RIVER OVERFLOW Iowa Good 2021 72.2 m 737
IOWA RIVER OVERFLOW Iowa Good 2020 46.0 m 737
IOWA RIVER Iowa Good 2021 59.4 m 737
W.FK GRAND RIVER Iowa Poor 1935 65.2 m 737
CROOKED CREEK Iowa Fair 1985 53.3 m 737
SMALL NATURAL STREAM Iowa Poor 1935 6.4 m 737
SMALL STREAM Iowa Fair 1984 10.1 m 737
DRAINAGE DITCH Iowa Fair 1993 8.8 m 737
LITTLE MAQUOKETA RIVER Iowa Good 1992 75.0 m 737
I-80 Iowa Good 1992 97.2 m 735
STREAM Iowa Fair 1966 17.7 m 734
SUGAR CREEK Iowa Good 2000 50.9 m 733
WILLOW CREEK Iowa Fair 1970 24.4 m 731
COBB CREEK Iowa Good 2017 46.0 m 730
DRY CREEK Iowa Fair 1974 31.4 m 730
BOHEMIAN CREEK Iowa Poor 1951 28.0 m 730
CALAMUS CREEK Iowa Good 2011 31.4 m 730
RICHLAND CREEK Iowa Good 2010 7.9 m 730
STREAM Iowa Fair 1966 7.9 m 730
DES MOINES RIVER Iowa Fair 1948 213.1 m 730
KNAPP CREEK Iowa Fair 1972 27.7 m 730
VOLGA RIVER Iowa Good 1988 69.5 m 729
MAPLE CREEK Iowa Fair 1988 26.8 m 729
SMALL STREAM Iowa Fair 1968 9.8 m 729
UNNAMED CREEK Iowa Good 1971 17.4 m 728
UNNAMED CREEK Iowa Fair 1971 6.4 m 728
NO NAME CREEK Iowa Fair 1971 21.1 m 728
SMALL STREAM Iowa Fair 1900 6.4 m 727
WALNUT CREEK Iowa Fair 1991 67.1 m 727
WILLOW CREEK Iowa Good 2019 6.3 m 727
SMALL Iowa Fair 1983 27.7 m 727
WET CREEK Iowa Fair 1968 10.7 m 727
BRANCH OF WET CREEK Iowa Fair 1968 6.4 m 727
BRANCH SALT CREEK Iowa Fair 1998 9.1 m 727
FLOOD CREEK Iowa Good 2002 58.5 m 727
BRANCH SALT CREEK Iowa Good 1994 8.8 m 727
WAPSIPINICON RIVER Iowa Poor 1976 110.0 m 727
OVERFLOW Iowa Fair 1975 39.0 m 727
BUCK CREEK Iowa Poor 1976 31.4 m 727
DRY CREEK Iowa Good 2019 24.6 m 724
WILLOW CR Iowa Good 1973 31.4 m 722
NO NAME Iowa Good 1974 23.8 m 722
SMALL STREAM Iowa Fair 1954 6.7 m 722
MORGAN BRANCH Iowa Fair 1970 6.4 m 720
HOLCOMB CREEK Iowa Good 1998 48.8 m 720
STREAM Iowa Fair 1989 6.4 m 720
CHEQUEST CREEK Iowa Good 1989 58.5 m 720
SMALL Iowa Fair 1978 10.1 m 720
GLOVERS CREEK Iowa Poor 1914 10.7 m 719
POLLY CREEK Iowa Fair 1955 12.2 m 718

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.